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Finding the Fourth Proportional to 250,331.80, 375,581.56 and 81,859.92

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Solution

The fourth proportional to 250,331.80, 375,581.56 and 81,859.92 is: 122,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,331.80 : 375,581.56 = 81,859.92 : x
  2. Step 2: Convert to fraction form
    250,331.80/375,581.56 = 81,859.92/x
  3. Step 3: Cross multiply
    250,331.80x = 375,581.56 × 81,859.92
  4. Step 4: Simplify right side
    250,331.80x = 30,745,076,455.08
  5. Step 5: Solve for x
    x = 30,745,076,455.08/250,331.80
  6. Step 6: Final answer
    x = 122,817.30

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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.