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Finding the Fourth Proportional to 437,848.34, 656,870.92 and 138,346.89

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Solution

The fourth proportional to 437,848.34, 656,870.92 and 138,346.89 is: 207,551.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,848.34 : 656,870.92 = 138,346.89 : x
  2. Step 2: Convert to fraction form
    437,848.34/656,870.92 = 138,346.89/x
  3. Step 3: Cross multiply
    437,848.34x = 656,870.92 × 138,346.89
  4. Step 4: Simplify right side
    437,848.34x = 90,876,046,104.31
  5. Step 5: Solve for x
    x = 90,876,046,104.31/437,848.34
  6. Step 6: Final answer
    x = 207,551.43

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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.