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Finding the Fourth Proportional to 394,375.13, 591,642.28 and 124,545.45

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Solution

The fourth proportional to 394,375.13, 591,642.28 and 124,545.45 is: 186,843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,375.13 : 591,642.28 = 124,545.45 : x
  2. Step 2: Convert to fraction form
    394,375.13/591,642.28 = 124,545.45/x
  3. Step 3: Cross multiply
    394,375.13x = 591,642.28 × 124,545.45
  4. Step 4: Simplify right side
    394,375.13x = 73,686,352,347.41
  5. Step 5: Solve for x
    x = 73,686,352,347.41/394,375.13
  6. Step 6: Final answer
    x = 186,843.30

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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.