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Finding the Fourth Proportional to 382,086.95, 573,095.28 and 129,338.57

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Solution

The fourth proportional to 382,086.95, 573,095.28 and 129,338.57 is: 193,995.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,086.95 : 573,095.28 = 129,338.57 : x
  2. Step 2: Convert to fraction form
    382,086.95/573,095.28 = 129,338.57/x
  3. Step 3: Cross multiply
    382,086.95x = 573,095.28 × 129,338.57
  4. Step 4: Simplify right side
    382,086.95x = 74,123,323,988.95
  5. Step 5: Solve for x
    x = 74,123,323,988.95/382,086.95
  6. Step 6: Final answer
    x = 193,995.96

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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.