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Finding the Fourth Proportional to 275,909.70, 413,317.80 and 243,031.80

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Solution

The fourth proportional to 275,909.70, 413,317.80 and 243,031.80 is: 364,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,909.70 : 413,317.80 = 243,031.80 : x
  2. Step 2: Convert to fraction form
    275,909.70/413,317.80 = 243,031.80/x
  3. Step 3: Cross multiply
    275,909.70x = 413,317.80 × 243,031.80
  4. Step 4: Simplify right side
    275,909.70x = 100,449,368,906.04
  5. Step 5: Solve for x
    x = 100,449,368,906.04/275,909.70
  6. Step 6: Final answer
    x = 364,066.10

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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.