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Finding the Fourth Proportional to 492,331.80, 738,497.70 and 279,755.40

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Solution

The fourth proportional to 492,331.80, 738,497.70 and 279,755.40 is: 419,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,331.80 : 738,497.70 = 279,755.40 : x
  2. Step 2: Convert to fraction form
    492,331.80/738,497.70 = 279,755.40/x
  3. Step 3: Cross multiply
    492,331.80x = 738,497.70 × 279,755.40
  4. Step 4: Simplify right side
    492,331.80x = 206,598,719,462.58
  5. Step 5: Solve for x
    x = 206,598,719,462.58/492,331.80
  6. Step 6: Final answer
    x = 419,633.10

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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.