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Finding the Fourth Proportional to 220,933.50, 304,888.24 and 120,331.50

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Solution

The fourth proportional to 220,933.50, 304,888.24 and 120,331.50 is: 166,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,933.50 : 304,888.24 = 120,331.50 : x
  2. Step 2: Convert to fraction form
    220,933.50/304,888.24 = 120,331.50/x
  3. Step 3: Cross multiply
    220,933.50x = 304,888.24 × 120,331.50
  4. Step 4: Simplify right side
    220,933.50x = 36,687,659,251.56
  5. Step 5: Solve for x
    x = 36,687,659,251.56/220,933.50
  6. Step 6: Final answer
    x = 166,057.48

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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.