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Finding the Fourth Proportional to 260,227.92, 390,040.68 and 119,691.60

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Solution

The fourth proportional to 260,227.92, 390,040.68 and 119,691.60 is: 179,398.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,227.92 : 390,040.68 = 119,691.60 : x
  2. Step 2: Convert to fraction form
    260,227.92/390,040.68 = 119,691.60/x
  3. Step 3: Cross multiply
    260,227.92x = 390,040.68 × 119,691.60
  4. Step 4: Simplify right side
    260,227.92x = 46,684,593,054.29
  5. Step 5: Solve for x
    x = 46,684,593,054.29/260,227.92
  6. Step 6: Final answer
    x = 179,398.86

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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.