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Finding the Fourth Proportional to 238,665.80, 358,007.34 and 80,909.48

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Solution

The fourth proportional to 238,665.80, 358,007.34 and 80,909.48 is: 121,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,665.80 : 358,007.34 = 80,909.48 : x
  2. Step 2: Convert to fraction form
    238,665.80/358,007.34 = 80,909.48/x
  3. Step 3: Cross multiply
    238,665.80x = 358,007.34 × 80,909.48
  4. Step 4: Simplify right side
    238,665.80x = 28,966,187,715.58
  5. Step 5: Solve for x
    x = 28,966,187,715.58/238,665.80
  6. Step 6: Final answer
    x = 121,367.15

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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.