Home / 312,014,781.30-468,022,171.95-221,315,517.30

Finding the Fourth Proportional to 312,014,781.30, 468,022,171.95 and 221,315,517.30

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Solution

The fourth proportional to 312,014,781.30, 468,022,171.95 and 221,315,517.30 is: 331,973,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,014,781.30 : 468,022,171.95 = 221,315,517.30 : x
  2. Step 2: Convert to fraction form
    312,014,781.30/468,022,171.95 = 221,315,517.30/x
  3. Step 3: Cross multiply
    312,014,781.30x = 468,022,171.95 × 221,315,517.30
  4. Step 4: Simplify right side
    312,014,781.30x = 103,580,569,092,983,808
  5. Step 5: Solve for x
    x = 103,580,569,092,983,808/312,014,781.30
  6. Step 6: Final answer
    x = 331,973,275.95

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Double scale
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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.