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Finding the Fourth Proportional to 398,279.61, 597,530.13 and 173,659.68

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Solution

The fourth proportional to 398,279.61, 597,530.13 and 173,659.68 is: 260,537.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,279.61 : 597,530.13 = 173,659.68 : x
  2. Step 2: Convert to fraction form
    398,279.61/597,530.13 = 173,659.68/x
  3. Step 3: Cross multiply
    398,279.61x = 597,530.13 × 173,659.68
  4. Step 4: Simplify right side
    398,279.61x = 103,766,891,166.16
  5. Step 5: Solve for x
    x = 103,766,891,166.16/398,279.61
  6. Step 6: Final answer
    x = 260,537.79

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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.