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Finding the Fourth Proportional to 492,069.90, 738,104.85 and 137,138.70

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Solution

The fourth proportional to 492,069.90, 738,104.85 and 137,138.70 is: 205,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,069.90 : 738,104.85 = 137,138.70 : x
  2. Step 2: Convert to fraction form
    492,069.90/738,104.85 = 137,138.70/x
  3. Step 3: Cross multiply
    492,069.90x = 738,104.85 × 137,138.70
  4. Step 4: Simplify right side
    492,069.90x = 101,222,739,592.70
  5. Step 5: Solve for x
    x = 101,222,739,592.70/492,069.90
  6. Step 6: Final answer
    x = 205,708.05

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Similar ratio
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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.