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Finding the Fourth Proportional to 220,138.29, 303,822.96 and 123,348.70

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Solution

The fourth proportional to 220,138.29, 303,822.96 and 123,348.70 is: 170,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,138.29 : 303,822.96 = 123,348.70 : x
  2. Step 2: Convert to fraction form
    220,138.29/303,822.96 = 123,348.70/x
  3. Step 3: Cross multiply
    220,138.29x = 303,822.96 × 123,348.70
  4. Step 4: Simplify right side
    220,138.29x = 37,476,167,146.15
  5. Step 5: Solve for x
    x = 37,476,167,146.15/220,138.29
  6. Step 6: Final answer
    x = 170,239.20

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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.