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Finding the Fourth Proportional to 220,080.70, 330,230.40 and 86,965.30

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Solution

The fourth proportional to 220,080.70, 330,230.40 and 86,965.30 is: 130,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,080.70 : 330,230.40 = 86,965.30 : x
  2. Step 2: Convert to fraction form
    220,080.70/330,230.40 = 86,965.30/x
  3. Step 3: Cross multiply
    220,080.70x = 330,230.40 × 86,965.30
  4. Step 4: Simplify right side
    220,080.70x = 28,718,585,805.12
  5. Step 5: Solve for x
    x = 28,718,585,805.12/220,080.70
  6. Step 6: Final answer
    x = 130,491.16

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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.