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Finding the Fourth Proportional to 275,619.40, 413,429.10 and 88,649.80

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Solution

The fourth proportional to 275,619.40, 413,429.10 and 88,649.80 is: 132,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,619.40 : 413,429.10 = 88,649.80 : x
  2. Step 2: Convert to fraction form
    275,619.40/413,429.10 = 88,649.80/x
  3. Step 3: Cross multiply
    275,619.40x = 413,429.10 × 88,649.80
  4. Step 4: Simplify right side
    275,619.40x = 36,650,407,029.18
  5. Step 5: Solve for x
    x = 36,650,407,029.18/275,619.40
  6. Step 6: Final answer
    x = 132,974.70

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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.