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Finding the Fourth Proportional to 220,515.60, 304,311.55 and 125,022.30

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Solution

The fourth proportional to 220,515.60, 304,311.55 and 125,022.30 is: 172,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,515.60 : 304,311.55 = 125,022.30 : x
  2. Step 2: Convert to fraction form
    220,515.60/304,311.55 = 125,022.30/x
  3. Step 3: Cross multiply
    220,515.60x = 304,311.55 × 125,022.30
  4. Step 4: Simplify right side
    220,515.60x = 38,045,729,897.57
  5. Step 5: Solve for x
    x = 38,045,729,897.57/220,515.60
  6. Step 6: Final answer
    x = 172,530.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.