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Finding the Fourth Proportional to 495,414.20, 743,121.30 and 121,437.20

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Solution

The fourth proportional to 495,414.20, 743,121.30 and 121,437.20 is: 182,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,414.20 : 743,121.30 = 121,437.20 : x
  2. Step 2: Convert to fraction form
    495,414.20/743,121.30 = 121,437.20/x
  3. Step 3: Cross multiply
    495,414.20x = 743,121.30 × 121,437.20
  4. Step 4: Simplify right side
    495,414.20x = 90,242,569,932.36
  5. Step 5: Solve for x
    x = 90,242,569,932.36/495,414.20
  6. Step 6: Final answer
    x = 182,155.80

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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.