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Finding the Fourth Proportional to 238,909.02, 358,335.81 and 89,154.54

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Solution

The fourth proportional to 238,909.02, 358,335.81 and 89,154.54 is: 133,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,909.02 : 358,335.81 = 89,154.54 : x
  2. Step 2: Convert to fraction form
    238,909.02/358,335.81 = 89,154.54/x
  3. Step 3: Cross multiply
    238,909.02x = 358,335.81 × 89,154.54
  4. Step 4: Simplify right side
    238,909.02x = 31,947,264,306.08
  5. Step 5: Solve for x
    x = 31,947,264,306.08/238,909.02
  6. Step 6: Final answer
    x = 133,721.47

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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.