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Finding the Fourth Proportional to 282,775.20, 424,130.88 and 72,414.72

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Solution

The fourth proportional to 282,775.20, 424,130.88 and 72,414.72 is: 108,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,775.20 : 424,130.88 = 72,414.72 : x
  2. Step 2: Convert to fraction form
    282,775.20/424,130.88 = 72,414.72/x
  3. Step 3: Cross multiply
    282,775.20x = 424,130.88 × 72,414.72
  4. Step 4: Simplify right side
    282,775.20x = 30,713,318,918.55
  5. Step 5: Solve for x
    x = 30,713,318,918.55/282,775.20
  6. Step 6: Final answer
    x = 108,613.91

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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.