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Finding the Fourth Proportional to 318,139.71, 477,285.57 and 93,495.21

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Solution

The fourth proportional to 318,139.71, 477,285.57 and 93,495.21 is: 140,265.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,139.71 : 477,285.57 = 93,495.21 : x
  2. Step 2: Convert to fraction form
    318,139.71/477,285.57 = 93,495.21/x
  3. Step 3: Cross multiply
    318,139.71x = 477,285.57 × 93,495.21
  4. Step 4: Simplify right side
    318,139.71x = 44,623,914,597.12
  5. Step 5: Solve for x
    x = 44,623,914,597.12/318,139.71
  6. Step 6: Final answer
    x = 140,265.15

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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.