Home / 238,589.04-329,259.18-129,700.70

Finding the Fourth Proportional to 238,589.04, 329,259.18 and 129,700.70

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Solution

The fourth proportional to 238,589.04, 329,259.18 and 129,700.70 is: 178,990.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,589.04 : 329,259.18 = 129,700.70 : x
  2. Step 2: Convert to fraction form
    238,589.04/329,259.18 = 129,700.70/x
  3. Step 3: Cross multiply
    238,589.04x = 329,259.18 × 129,700.70
  4. Step 4: Simplify right side
    238,589.04x = 42,705,144,481.13
  5. Step 5: Solve for x
    x = 42,705,144,481.13/238,589.04
  6. Step 6: Final answer
    x = 178,990.39

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Double scale
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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.