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Finding the Fourth Proportional to 172,279.47, 258,398.64 and 45,929.19

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Solution

The fourth proportional to 172,279.47, 258,398.64 and 45,929.19 is: 68,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,279.47 : 258,398.64 = 45,929.19 : x
  2. Step 2: Convert to fraction form
    172,279.47/258,398.64 = 45,929.19/x
  3. Step 3: Cross multiply
    172,279.47x = 258,398.64 × 45,929.19
  4. Step 4: Simplify right side
    172,279.47x = 11,868,040,232.30
  5. Step 5: Solve for x
    x = 11,868,040,232.30/172,279.47
  6. Step 6: Final answer
    x = 68,888.30

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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.