Home / 345,115.51-517,747.49-172,101.53

Finding the Fourth Proportional to 345,115.51, 517,747.49 and 172,101.53

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Solution

The fourth proportional to 345,115.51, 517,747.49 and 172,101.53 is: 258,189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,115.51 : 517,747.49 = 172,101.53 : x
  2. Step 2: Convert to fraction form
    345,115.51/517,747.49 = 172,101.53/x
  3. Step 3: Cross multiply
    345,115.51x = 517,747.49 × 172,101.53
  4. Step 4: Simplify right side
    345,115.51x = 89,105,135,182.66
  5. Step 5: Solve for x
    x = 89,105,135,182.66/345,115.51
  6. Step 6: Final answer
    x = 258,189.31

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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.