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Finding the Fourth Proportional to 239,512.80, 359,398.80 and 99,285.60

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Solution

The fourth proportional to 239,512.80, 359,398.80 and 99,285.60 is: 148,982.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,512.80 : 359,398.80 = 99,285.60 : x
  2. Step 2: Convert to fraction form
    239,512.80/359,398.80 = 99,285.60/x
  3. Step 3: Cross multiply
    239,512.80x = 359,398.80 × 99,285.60
  4. Step 4: Simplify right side
    239,512.80x = 35,683,125,497.28
  5. Step 5: Solve for x
    x = 35,683,125,497.28/239,512.80
  6. Step 6: Final answer
    x = 148,982.12

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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.