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Finding the Fourth Proportional to 303,498.70, 455,248.05 and 161,781.10

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Solution

The fourth proportional to 303,498.70, 455,248.05 and 161,781.10 is: 242,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,498.70 : 455,248.05 = 161,781.10 : x
  2. Step 2: Convert to fraction form
    303,498.70/455,248.05 = 161,781.10/x
  3. Step 3: Cross multiply
    303,498.70x = 455,248.05 × 161,781.10
  4. Step 4: Simplify right side
    303,498.70x = 73,650,530,301.86
  5. Step 5: Solve for x
    x = 73,650,530,301.86/303,498.70
  6. Step 6: Final answer
    x = 242,671.65

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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.