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Finding the Fourth Proportional to 238,978.58, 358,467.88 and 89,230.55

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Solution

The fourth proportional to 238,978.58, 358,467.88 and 89,230.55 is: 133,845.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,978.58 : 358,467.88 = 89,230.55 : x
  2. Step 2: Convert to fraction form
    238,978.58/358,467.88 = 89,230.55/x
  3. Step 3: Cross multiply
    238,978.58x = 358,467.88 × 89,230.55
  4. Step 4: Simplify right side
    238,978.58x = 31,986,286,089.73
  5. Step 5: Solve for x
    x = 31,986,286,089.73/238,978.58
  6. Step 6: Final answer
    x = 133,845.83

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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.