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Finding the Fourth Proportional to 275,716.80, 413,575.20 and 135,748.80

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Solution

The fourth proportional to 275,716.80, 413,575.20 and 135,748.80 is: 203,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,716.80 : 413,575.20 = 135,748.80 : x
  2. Step 2: Convert to fraction form
    275,716.80/413,575.20 = 135,748.80/x
  3. Step 3: Cross multiply
    275,716.80x = 413,575.20 × 135,748.80
  4. Step 4: Simplify right side
    275,716.80x = 56,142,337,109.76
  5. Step 5: Solve for x
    x = 56,142,337,109.76/275,716.80
  6. Step 6: Final answer
    x = 203,623.20

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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.