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Finding the Fourth Proportional to 486,191.72, 729,613.74 and 170,649.56

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Solution

The fourth proportional to 486,191.72, 729,613.74 and 170,649.56 is: 256,088.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,191.72 : 729,613.74 = 170,649.56 : x
  2. Step 2: Convert to fraction form
    486,191.72/729,613.74 = 170,649.56/x
  3. Step 3: Cross multiply
    486,191.72x = 729,613.74 × 170,649.56
  4. Step 4: Simplify right side
    486,191.72x = 124,508,263,700.95
  5. Step 5: Solve for x
    x = 124,508,263,700.95/486,191.72
  6. Step 6: Final answer
    x = 256,088.82

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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.