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Finding the Fourth Proportional to 327,498.81, 491,248.21 and 90,841.49

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Solution

The fourth proportional to 327,498.81, 491,248.21 and 90,841.49 is: 136,262.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,498.81 : 491,248.21 = 90,841.49 : x
  2. Step 2: Convert to fraction form
    327,498.81/491,248.21 = 90,841.49/x
  3. Step 3: Cross multiply
    327,498.81x = 491,248.21 × 90,841.49
  4. Step 4: Simplify right side
    327,498.81x = 44,625,717,514.05
  5. Step 5: Solve for x
    x = 44,625,717,514.05/327,498.81
  6. Step 6: Final answer
    x = 136,262.23

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Double scale
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Similar ratio
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1.5x scale

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.