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Finding the Fourth Proportional to 220,346.69, 330,549.45 and 87,195.81

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Solution

The fourth proportional to 220,346.69, 330,549.45 and 87,195.81 is: 130,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,346.69 : 330,549.45 = 87,195.81 : x
  2. Step 2: Convert to fraction form
    220,346.69/330,549.45 = 87,195.81/x
  3. Step 3: Cross multiply
    220,346.69x = 330,549.45 × 87,195.81
  4. Step 4: Simplify right side
    220,346.69x = 28,822,527,037.80
  5. Step 5: Solve for x
    x = 28,822,527,037.80/220,346.69
  6. Step 6: Final answer
    x = 130,805.36

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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.