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Finding the Fourth Proportional to 275,712.40, 413,645.40 and 135,475.60

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Solution

The fourth proportional to 275,712.40, 413,645.40 and 135,475.60 is: 203,251.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,712.40 : 413,645.40 = 135,475.60 : x
  2. Step 2: Convert to fraction form
    275,712.40/413,645.40 = 135,475.60/x
  3. Step 3: Cross multiply
    275,712.40x = 413,645.40 × 135,475.60
  4. Step 4: Simplify right side
    275,712.40x = 56,038,858,752.24
  5. Step 5: Solve for x
    x = 56,038,858,752.24/275,712.40
  6. Step 6: Final answer
    x = 203,251.14

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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.