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Finding the Fourth Proportional to 220,939.40, 304,896.22 and 120,337.40

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Solution

The fourth proportional to 220,939.40, 304,896.22 and 120,337.40 is: 166,065.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,939.40 : 304,896.22 = 120,337.40 : x
  2. Step 2: Convert to fraction form
    220,939.40/304,896.22 = 120,337.40/x
  3. Step 3: Cross multiply
    220,939.40x = 304,896.22 × 120,337.40
  4. Step 4: Simplify right side
    220,939.40x = 36,690,418,384.63
  5. Step 5: Solve for x
    x = 36,690,418,384.63/220,939.40
  6. Step 6: Final answer
    x = 166,065.53

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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.