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Finding the Fourth Proportional to 437,470.80, 656,125.20 and 121,862.40

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Solution

The fourth proportional to 437,470.80, 656,125.20 and 121,862.40 is: 182,771.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,470.80 : 656,125.20 = 121,862.40 : x
  2. Step 2: Convert to fraction form
    437,470.80/656,125.20 = 121,862.40/x
  3. Step 3: Cross multiply
    437,470.80x = 656,125.20 × 121,862.40
  4. Step 4: Simplify right side
    437,470.80x = 79,956,991,572.48
  5. Step 5: Solve for x
    x = 79,956,991,572.48/437,470.80
  6. Step 6: Final answer
    x = 182,771.04

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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.