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Finding the Fourth Proportional to 326,667.90, 489,770.19 and 126,819.84

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Solution

The fourth proportional to 326,667.90, 489,770.19 and 126,819.84 is: 190,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,667.90 : 489,770.19 = 126,819.84 : x
  2. Step 2: Convert to fraction form
    326,667.90/489,770.19 = 126,819.84/x
  3. Step 3: Cross multiply
    326,667.90x = 489,770.19 × 126,819.84
  4. Step 4: Simplify right side
    326,667.90x = 62,112,577,132.57
  5. Step 5: Solve for x
    x = 62,112,577,132.57/326,667.90
  6. Step 6: Final answer
    x = 190,139.82

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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.