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Finding the Fourth Proportional to 220,064.20, 329,999.10 and 86,900.20

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Solution

The fourth proportional to 220,064.20, 329,999.10 and 86,900.20 is: 130,311.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,064.20 : 329,999.10 = 86,900.20 : x
  2. Step 2: Convert to fraction form
    220,064.20/329,999.10 = 86,900.20/x
  3. Step 3: Cross multiply
    220,064.20x = 329,999.10 × 86,900.20
  4. Step 4: Simplify right side
    220,064.20x = 28,676,987,789.82
  5. Step 5: Solve for x
    x = 28,676,987,789.82/220,064.20
  6. Step 6: Final answer
    x = 130,311.92

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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.