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Finding the Fourth Proportional to 234,891.72, 352,272.78 and 66,398.76

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Solution

The fourth proportional to 234,891.72, 352,272.78 and 66,398.76 is: 99,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,891.72 : 352,272.78 = 66,398.76 : x
  2. Step 2: Convert to fraction form
    234,891.72/352,272.78 = 66,398.76/x
  3. Step 3: Cross multiply
    234,891.72x = 352,272.78 × 66,398.76
  4. Step 4: Simplify right side
    234,891.72x = 23,390,475,773.75
  5. Step 5: Solve for x
    x = 23,390,475,773.75/234,891.72
  6. Step 6: Final answer
    x = 99,579.82

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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.