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Finding the Fourth Proportional to 239,424.64, 359,136.96 and 81,654.46

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Solution

The fourth proportional to 239,424.64, 359,136.96 and 81,654.46 is: 122,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,424.64 : 359,136.96 = 81,654.46 : x
  2. Step 2: Convert to fraction form
    239,424.64/359,136.96 = 81,654.46/x
  3. Step 3: Cross multiply
    239,424.64x = 359,136.96 × 81,654.46
  4. Step 4: Simplify right side
    239,424.64x = 29,325,134,534.84
  5. Step 5: Solve for x
    x = 29,325,134,534.84/239,424.64
  6. Step 6: Final answer
    x = 122,481.69

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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.