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Finding the Fourth Proportional to 373,290.26, 515,125.71 and 220,377.71

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Solution

The fourth proportional to 373,290.26, 515,125.71 and 220,377.71 is: 304,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,290.26 : 515,125.71 = 220,377.71 : x
  2. Step 2: Convert to fraction form
    373,290.26/515,125.71 = 220,377.71/x
  3. Step 3: Cross multiply
    373,290.26x = 515,125.71 × 220,377.71
  4. Step 4: Simplify right side
    373,290.26x = 113,522,221,756.30
  5. Step 5: Solve for x
    x = 113,522,221,756.30/373,290.26
  6. Step 6: Final answer
    x = 304,112.47

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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.