Home / 238,587.54-329,257.10-129,699.20

Finding the Fourth Proportional to 238,587.54, 329,257.10 and 129,699.20

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Solution

The fourth proportional to 238,587.54, 329,257.10 and 129,699.20 is: 178,988.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,587.54 : 329,257.10 = 129,699.20 : x
  2. Step 2: Convert to fraction form
    238,587.54/329,257.10 = 129,699.20/x
  3. Step 3: Cross multiply
    238,587.54x = 329,257.10 × 129,699.20
  4. Step 4: Simplify right side
    238,587.54x = 42,704,382,685.68
  5. Step 5: Solve for x
    x = 42,704,382,685.68/238,587.54
  6. Step 6: Final answer
    x = 178,988.32

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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.