Home / 230,531.20-318,160.40-128,573.28

Finding the Fourth Proportional to 230,531.20, 318,160.40 and 128,573.28

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Solution

The fourth proportional to 230,531.20, 318,160.40 and 128,573.28 is: 177,446.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,531.20 : 318,160.40 = 128,573.28 : x
  2. Step 2: Convert to fraction form
    230,531.20/318,160.40 = 128,573.28/x
  3. Step 3: Cross multiply
    230,531.20x = 318,160.40 × 128,573.28
  4. Step 4: Simplify right side
    230,531.20x = 40,906,926,194.11
  5. Step 5: Solve for x
    x = 40,906,926,194.11/230,531.20
  6. Step 6: Final answer
    x = 177,446.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.