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Finding the Fourth Proportional to 220,116.20, 330,077.10 and 86,952.20

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Solution

The fourth proportional to 220,116.20, 330,077.10 and 86,952.20 is: 130,389.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,116.20 : 330,077.10 = 86,952.20 : x
  2. Step 2: Convert to fraction form
    220,116.20/330,077.10 = 86,952.20/x
  3. Step 3: Cross multiply
    220,116.20x = 330,077.10 × 86,952.20
  4. Step 4: Simplify right side
    220,116.20x = 28,700,930,014.62
  5. Step 5: Solve for x
    x = 28,700,930,014.62/220,116.20
  6. Step 6: Final answer
    x = 130,389.90

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1.5x scale

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.