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Finding the Fourth Proportional to 247,718,687.60, 371,566,221.60 and 83,940,381.20

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Solution

The fourth proportional to 247,718,687.60, 371,566,221.60 and 83,940,381.20 is: 125,906,570.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,718,687.60 : 371,566,221.60 = 83,940,381.20 : x
  2. Step 2: Convert to fraction form
    247,718,687.60/371,566,221.60 = 83,940,381.20/x
  3. Step 3: Cross multiply
    247,718,687.60x = 371,566,221.60 × 83,940,381.20
  4. Step 4: Simplify right side
    247,718,687.60x = 31,189,410,282,147,676
  5. Step 5: Solve for x
    x = 31,189,410,282,147,676/247,718,687.60
  6. Step 6: Final answer
    x = 125,906,570.01

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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.