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Finding the Fourth Proportional to 326,053.70, 489,080.55 and 247,321.70

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Solution

The fourth proportional to 326,053.70, 489,080.55 and 247,321.70 is: 370,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,053.70 : 489,080.55 = 247,321.70 : x
  2. Step 2: Convert to fraction form
    326,053.70/489,080.55 = 247,321.70/x
  3. Step 3: Cross multiply
    326,053.70x = 489,080.55 × 247,321.70
  4. Step 4: Simplify right side
    326,053.70x = 120,960,233,062.94
  5. Step 5: Solve for x
    x = 120,960,233,062.94/326,053.70
  6. Step 6: Final answer
    x = 370,982.55

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Similar ratio
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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.