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Finding the Fourth Proportional to 240,868.80, 361,432.80 and 100,641.60

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Solution

The fourth proportional to 240,868.80, 361,432.80 and 100,641.60 is: 151,016.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,868.80 : 361,432.80 = 100,641.60 : x
  2. Step 2: Convert to fraction form
    240,868.80/361,432.80 = 100,641.60/x
  3. Step 3: Cross multiply
    240,868.80x = 361,432.80 × 100,641.60
  4. Step 4: Simplify right side
    240,868.80x = 36,375,175,284.48
  5. Step 5: Solve for x
    x = 36,375,175,284.48/240,868.80
  6. Step 6: Final answer
    x = 151,016.55

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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.