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Finding the Fourth Proportional to 239,132.62, 329,978.60 and 147,237.31

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Solution

The fourth proportional to 239,132.62, 329,978.60 and 147,237.31 is: 203,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,132.62 : 329,978.60 = 147,237.31 : x
  2. Step 2: Convert to fraction form
    239,132.62/329,978.60 = 147,237.31/x
  3. Step 3: Cross multiply
    239,132.62x = 329,978.60 × 147,237.31
  4. Step 4: Simplify right side
    239,132.62x = 48,585,161,442.94
  5. Step 5: Solve for x
    x = 48,585,161,442.94/239,132.62
  6. Step 6: Final answer
    x = 203,172.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.