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Finding the Fourth Proportional to 389,644.60, 584,472.66 and 109,144.12

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Solution

The fourth proportional to 389,644.60, 584,472.66 and 109,144.12 is: 163,717.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,644.60 : 584,472.66 = 109,144.12 : x
  2. Step 2: Convert to fraction form
    389,644.60/584,472.66 = 109,144.12/x
  3. Step 3: Cross multiply
    389,644.60x = 584,472.66 × 109,144.12
  4. Step 4: Simplify right side
    389,644.60x = 63,791,754,139.76
  5. Step 5: Solve for x
    x = 63,791,754,139.76/389,644.60
  6. Step 6: Final answer
    x = 163,717.79

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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.