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Finding the Fourth Proportional to 258,359.73, 387,548.45 and 89,881.55

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Solution

The fourth proportional to 258,359.73, 387,548.45 and 89,881.55 is: 134,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,359.73 : 387,548.45 = 89,881.55 : x
  2. Step 2: Convert to fraction form
    258,359.73/387,548.45 = 89,881.55/x
  3. Step 3: Cross multiply
    258,359.73x = 387,548.45 × 89,881.55
  4. Step 4: Simplify right side
    258,359.73x = 34,833,454,789.31
  5. Step 5: Solve for x
    x = 34,833,454,789.31/258,359.73
  6. Step 6: Final answer
    x = 134,825.41

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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.