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Finding the Fourth Proportional to 268,909.52, 403,452.60 and 135,726.80

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Solution

The fourth proportional to 268,909.52, 403,452.60 and 135,726.80 is: 203,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,909.52 : 403,452.60 = 135,726.80 : x
  2. Step 2: Convert to fraction form
    268,909.52/403,452.60 = 135,726.80/x
  3. Step 3: Cross multiply
    268,909.52x = 403,452.60 × 135,726.80
  4. Step 4: Simplify right side
    268,909.52x = 54,759,330,349.68
  5. Step 5: Solve for x
    x = 54,759,330,349.68/268,909.52
  6. Step 6: Final answer
    x = 203,634.78

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1.5x scale

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.