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Finding the Fourth Proportional to 220,343.80, 304,055.85 and 122,221.12

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Solution

The fourth proportional to 220,343.80, 304,055.85 and 122,221.12 is: 168,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,343.80 : 304,055.85 = 122,221.12 : x
  2. Step 2: Convert to fraction form
    220,343.80/304,055.85 = 122,221.12/x
  3. Step 3: Cross multiply
    220,343.80x = 304,055.85 × 122,221.12
  4. Step 4: Simplify right side
    220,343.80x = 37,162,046,529.55
  5. Step 5: Solve for x
    x = 37,162,046,529.55/220,343.80
  6. Step 6: Final answer
    x = 168,654.83

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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.