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Finding the Fourth Proportional to 238,909.80, 329,678.53 and 142,108.32

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Solution

The fourth proportional to 238,909.80, 329,678.53 and 142,108.32 is: 196,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,909.80 : 329,678.53 = 142,108.32 : x
  2. Step 2: Convert to fraction form
    238,909.80/329,678.53 = 142,108.32/x
  3. Step 3: Cross multiply
    238,909.80x = 329,678.53 × 142,108.32
  4. Step 4: Simplify right side
    238,909.80x = 46,850,060,979.71
  5. Step 5: Solve for x
    x = 46,850,060,979.71/238,909.80
  6. Step 6: Final answer
    x = 196,099.37

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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.