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Finding the Fourth Proportional to 345,044.55, 517,613.99 and 120,371.31

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Solution

The fourth proportional to 345,044.55, 517,613.99 and 120,371.31 is: 180,573.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,044.55 : 517,613.99 = 120,371.31 : x
  2. Step 2: Convert to fraction form
    345,044.55/517,613.99 = 120,371.31/x
  3. Step 3: Cross multiply
    345,044.55x = 517,613.99 × 120,371.31
  4. Step 4: Simplify right side
    345,044.55x = 62,305,872,331.53
  5. Step 5: Solve for x
    x = 62,305,872,331.53/345,044.55
  6. Step 6: Final answer
    x = 180,573.41

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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.