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Finding the Fourth Proportional to 270,759.43, 406,148.55 and 128,531.42

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Solution

The fourth proportional to 270,759.43, 406,148.55 and 128,531.42 is: 192,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,759.43 : 406,148.55 = 128,531.42 : x
  2. Step 2: Convert to fraction form
    270,759.43/406,148.55 = 128,531.42/x
  3. Step 3: Cross multiply
    270,759.43x = 406,148.55 × 128,531.42
  4. Step 4: Simplify right side
    270,759.43x = 52,202,851,157.35
  5. Step 5: Solve for x
    x = 52,202,851,157.35/270,759.43
  6. Step 6: Final answer
    x = 192,801.60

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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.