Home / 326,734.90-489,912.07-126,821.75

Finding the Fourth Proportional to 326,734.90, 489,912.07 and 126,821.75

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Solution

The fourth proportional to 326,734.90, 489,912.07 and 126,821.75 is: 190,158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,734.90 : 489,912.07 = 126,821.75 : x
  2. Step 2: Convert to fraction form
    326,734.90/489,912.07 = 126,821.75/x
  3. Step 3: Cross multiply
    326,734.90x = 489,912.07 × 126,821.75
  4. Step 4: Simplify right side
    326,734.90x = 62,131,506,063.52
  5. Step 5: Solve for x
    x = 62,131,506,063.52/326,734.90
  6. Step 6: Final answer
    x = 190,158.77

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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.