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Finding the Fourth Proportional to 247,920.48, 371,884.86 and 129,822.48

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Solution

The fourth proportional to 247,920.48, 371,884.86 and 129,822.48 is: 194,735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,920.48 : 371,884.86 = 129,822.48 : x
  2. Step 2: Convert to fraction form
    247,920.48/371,884.86 = 129,822.48/x
  3. Step 3: Cross multiply
    247,920.48x = 371,884.86 × 129,822.48
  4. Step 4: Simplify right side
    247,920.48x = 48,279,014,799.65
  5. Step 5: Solve for x
    x = 48,279,014,799.65/247,920.48
  6. Step 6: Final answer
    x = 194,735.89

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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.