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Finding the Fourth Proportional to 275,681.40, 413,579.70 and 88,711.80

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Solution

The fourth proportional to 275,681.40, 413,579.70 and 88,711.80 is: 133,086.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,681.40 : 413,579.70 = 88,711.80 : x
  2. Step 2: Convert to fraction form
    275,681.40/413,579.70 = 88,711.80/x
  3. Step 3: Cross multiply
    275,681.40x = 413,579.70 × 88,711.80
  4. Step 4: Simplify right side
    275,681.40x = 36,689,399,630.46
  5. Step 5: Solve for x
    x = 36,689,399,630.46/275,681.40
  6. Step 6: Final answer
    x = 133,086.24

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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.