Home / 312,014,921.80-468,022,382.70-221,315,657.80

Finding the Fourth Proportional to 312,014,921.80, 468,022,382.70 and 221,315,657.80

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Solution

The fourth proportional to 312,014,921.80, 468,022,382.70 and 221,315,657.80 is: 331,973,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,014,921.80 : 468,022,382.70 = 221,315,657.80 : x
  2. Step 2: Convert to fraction form
    312,014,921.80/468,022,382.70 = 221,315,657.80/x
  3. Step 3: Cross multiply
    312,014,921.80x = 468,022,382.70 × 221,315,657.80
  4. Step 4: Simplify right side
    312,014,921.80x = 103,580,681,492,373,840
  5. Step 5: Solve for x
    x = 103,580,681,492,373,840/312,014,921.80
  6. Step 6: Final answer
    x = 331,973,486.70

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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.