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Finding the Fourth Proportional to 247,621.60, 371,432.40 and 89,855.20

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Solution

The fourth proportional to 247,621.60, 371,432.40 and 89,855.20 is: 134,782.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,621.60 : 371,432.40 = 89,855.20 : x
  2. Step 2: Convert to fraction form
    247,621.60/371,432.40 = 89,855.20/x
  3. Step 3: Cross multiply
    247,621.60x = 371,432.40 × 89,855.20
  4. Step 4: Simplify right side
    247,621.60x = 33,375,132,588.48
  5. Step 5: Solve for x
    x = 33,375,132,588.48/247,621.60
  6. Step 6: Final answer
    x = 134,782.80

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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.