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Finding the Fourth Proportional to 247,748.40, 371,768.40 and 89,992.80

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Solution

The fourth proportional to 247,748.40, 371,768.40 and 89,992.80 is: 135,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,748.40 : 371,768.40 = 89,992.80 : x
  2. Step 2: Convert to fraction form
    247,748.40/371,768.40 = 89,992.80/x
  3. Step 3: Cross multiply
    247,748.40x = 371,768.40 × 89,992.80
  4. Step 4: Simplify right side
    247,748.40x = 33,456,479,267.52
  5. Step 5: Solve for x
    x = 33,456,479,267.52/247,748.40
  6. Step 6: Final answer
    x = 135,042.16

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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.