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Finding the Fourth Proportional to 492,488.55, 738,601.47 and 137,440.17

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Solution

The fourth proportional to 492,488.55, 738,601.47 and 137,440.17 is: 206,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,488.55 : 738,601.47 = 137,440.17 : x
  2. Step 2: Convert to fraction form
    492,488.55/738,601.47 = 137,440.17/x
  3. Step 3: Cross multiply
    492,488.55x = 738,601.47 × 137,440.17
  4. Step 4: Simplify right side
    492,488.55x = 101,513,511,599.05
  5. Step 5: Solve for x
    x = 101,513,511,599.05/492,488.55
  6. Step 6: Final answer
    x = 206,123.60

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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.