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Finding the Fourth Proportional to 486,245.72, 729,694.38 and 170,703.56

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Solution

The fourth proportional to 486,245.72, 729,694.38 and 170,703.56 is: 256,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,245.72 : 729,694.38 = 170,703.56 : x
  2. Step 2: Convert to fraction form
    486,245.72/729,694.38 = 170,703.56/x
  3. Step 3: Cross multiply
    486,245.72x = 729,694.38 × 170,703.56
  4. Step 4: Simplify right side
    486,245.72x = 124,561,428,377.99
  5. Step 5: Solve for x
    x = 124,561,428,377.99/486,245.72
  6. Step 6: Final answer
    x = 256,169.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.