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Finding the Fourth Proportional to 305,896.20, 422,125.02 and 169,938.70

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Solution

The fourth proportional to 305,896.20, 422,125.02 and 169,938.70 is: 234,508.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,896.20 : 422,125.02 = 169,938.70 : x
  2. Step 2: Convert to fraction form
    305,896.20/422,125.02 = 169,938.70/x
  3. Step 3: Cross multiply
    305,896.20x = 422,125.02 × 169,938.70
  4. Step 4: Simplify right side
    305,896.20x = 71,735,377,136.27
  5. Step 5: Solve for x
    x = 71,735,377,136.27/305,896.20
  6. Step 6: Final answer
    x = 234,508.89

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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.