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Finding the Fourth Proportional to 454,043.20, 681,129.60 and 154,472.80

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Solution

The fourth proportional to 454,043.20, 681,129.60 and 154,472.80 is: 231,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,043.20 : 681,129.60 = 154,472.80 : x
  2. Step 2: Convert to fraction form
    454,043.20/681,129.60 = 154,472.80/x
  3. Step 3: Cross multiply
    454,043.20x = 681,129.60 × 154,472.80
  4. Step 4: Simplify right side
    454,043.20x = 105,215,996,474.88
  5. Step 5: Solve for x
    x = 105,215,996,474.88/454,043.20
  6. Step 6: Final answer
    x = 231,731.25

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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.