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Finding the Fourth Proportional to 259,613.67, 389,417.36 and 67,471.07

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Solution

The fourth proportional to 259,613.67, 389,417.36 and 67,471.07 is: 101,205.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,613.67 : 389,417.36 = 67,471.07 : x
  2. Step 2: Convert to fraction form
    259,613.67/389,417.36 = 67,471.07/x
  3. Step 3: Cross multiply
    259,613.67x = 389,417.36 × 67,471.07
  4. Step 4: Simplify right side
    259,613.67x = 26,274,407,098.00
  5. Step 5: Solve for x
    x = 26,274,407,098.00/259,613.67
  6. Step 6: Final answer
    x = 101,205.79

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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.