Home / 326,620.38-489,739.90-126,707.18

Finding the Fourth Proportional to 326,620.38, 489,739.90 and 126,707.18

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Solution

The fourth proportional to 326,620.38, 489,739.90 and 126,707.18 is: 189,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,620.38 : 489,739.90 = 126,707.18 : x
  2. Step 2: Convert to fraction form
    326,620.38/489,739.90 = 126,707.18/x
  3. Step 3: Cross multiply
    326,620.38x = 489,739.90 × 126,707.18
  4. Step 4: Simplify right side
    326,620.38x = 62,053,561,662.48
  5. Step 5: Solve for x
    x = 62,053,561,662.48/326,620.38
  6. Step 6: Final answer
    x = 189,986.80

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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.