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Finding the Fourth Proportional to 326,587.96, 489,912.92 and 126,923.76

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Solution

The fourth proportional to 326,587.96, 489,912.92 and 126,923.76 is: 190,397.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,587.96 : 489,912.92 = 126,923.76 : x
  2. Step 2: Convert to fraction form
    326,587.96/489,912.92 = 126,923.76/x
  3. Step 3: Cross multiply
    326,587.96x = 489,912.92 × 126,923.76
  4. Step 4: Simplify right side
    326,587.96x = 62,181,589,878.98
  5. Step 5: Solve for x
    x = 62,181,589,878.98/326,587.96
  6. Step 6: Final answer
    x = 190,397.68

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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.