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Finding the Fourth Proportional to 432,857.90, 649,286.85 and 243,901.10

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Solution

The fourth proportional to 432,857.90, 649,286.85 and 243,901.10 is: 365,851.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,857.90 : 649,286.85 = 243,901.10 : x
  2. Step 2: Convert to fraction form
    432,857.90/649,286.85 = 243,901.10/x
  3. Step 3: Cross multiply
    432,857.90x = 649,286.85 × 243,901.10
  4. Step 4: Simplify right side
    432,857.90x = 158,361,776,930.54
  5. Step 5: Solve for x
    x = 158,361,776,930.54/432,857.90
  6. Step 6: Final answer
    x = 365,851.65

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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.