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Finding the Fourth Proportional to 437,493.80, 656,159.70 and 121,885.40

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Solution

The fourth proportional to 437,493.80, 656,159.70 and 121,885.40 is: 182,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,493.80 : 656,159.70 = 121,885.40 : x
  2. Step 2: Convert to fraction form
    437,493.80/656,159.70 = 121,885.40/x
  3. Step 3: Cross multiply
    437,493.80x = 656,159.70 × 121,885.40
  4. Step 4: Simplify right side
    437,493.80x = 79,976,287,498.38
  5. Step 5: Solve for x
    x = 79,976,287,498.38/437,493.80
  6. Step 6: Final answer
    x = 182,805.53

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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.