Home / 312,014,782.30-468,022,173.45-221,315,518.30

Finding the Fourth Proportional to 312,014,782.30, 468,022,173.45 and 221,315,518.30

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Solution

The fourth proportional to 312,014,782.30, 468,022,173.45 and 221,315,518.30 is: 331,973,277.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,014,782.30 : 468,022,173.45 = 221,315,518.30 : x
  2. Step 2: Convert to fraction form
    312,014,782.30/468,022,173.45 = 221,315,518.30/x
  3. Step 3: Cross multiply
    312,014,782.30x = 468,022,173.45 × 221,315,518.30
  4. Step 4: Simplify right side
    312,014,782.30x = 103,580,569,892,979,248
  5. Step 5: Solve for x
    x = 103,580,569,892,979,248/312,014,782.30
  6. Step 6: Final answer
    x = 331,973,277.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.