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Finding the Fourth Proportional to 326,613.39, 489,729.40 and 126,700.17

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Solution

The fourth proportional to 326,613.39, 489,729.40 and 126,700.17 is: 189,976.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,613.39 : 489,729.40 = 126,700.17 : x
  2. Step 2: Convert to fraction form
    326,613.39/489,729.40 = 126,700.17/x
  3. Step 3: Cross multiply
    326,613.39x = 489,729.40 × 126,700.17
  4. Step 4: Simplify right side
    326,613.39x = 62,048,797,917.25
  5. Step 5: Solve for x
    x = 62,048,797,917.25/326,613.39
  6. Step 6: Final answer
    x = 189,976.29

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1.5x scale

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.