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Finding the Fourth Proportional to 220,139.30, 303,824.34 and 123,349.70

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Solution

The fourth proportional to 220,139.30, 303,824.34 and 123,349.70 is: 170,240.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,139.30 : 303,824.34 = 123,349.70 : x
  2. Step 2: Convert to fraction form
    220,139.30/303,824.34 = 123,349.70/x
  3. Step 3: Cross multiply
    220,139.30x = 303,824.34 × 123,349.70
  4. Step 4: Simplify right side
    220,139.30x = 37,476,641,191.70
  5. Step 5: Solve for x
    x = 37,476,641,191.70/220,139.30
  6. Step 6: Final answer
    x = 170,240.58

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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.