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Finding the Fourth Proportional to 275,629.40, 413,444.10 and 88,659.80

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Solution

The fourth proportional to 275,629.40, 413,444.10 and 88,659.80 is: 132,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,629.40 : 413,444.10 = 88,659.80 : x
  2. Step 2: Convert to fraction form
    275,629.40/413,444.10 = 88,659.80/x
  3. Step 3: Cross multiply
    275,629.40x = 413,444.10 × 88,659.80
  4. Step 4: Simplify right side
    275,629.40x = 36,655,871,217.18
  5. Step 5: Solve for x
    x = 36,655,871,217.18/275,629.40
  6. Step 6: Final answer
    x = 132,989.70

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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.