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Finding the Fourth Proportional to 330,451.43, 495,687.92 and 157,305.60

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Solution

The fourth proportional to 330,451.43, 495,687.92 and 157,305.60 is: 235,963.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,451.43 : 495,687.92 = 157,305.60 : x
  2. Step 2: Convert to fraction form
    330,451.43/495,687.92 = 157,305.60/x
  3. Step 3: Cross multiply
    330,451.43x = 495,687.92 × 157,305.60
  4. Step 4: Simplify right side
    330,451.43x = 77,974,484,881.82
  5. Step 5: Solve for x
    x = 77,974,484,881.82/330,451.43
  6. Step 6: Final answer
    x = 235,963.53

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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.