Home / 326,636.28-490,144.86-137,080.62

Finding the Fourth Proportional to 326,636.28, 490,144.86 and 137,080.62

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Solution

The fourth proportional to 326,636.28, 490,144.86 and 137,080.62 is: 205,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,636.28 : 490,144.86 = 137,080.62 : x
  2. Step 2: Convert to fraction form
    326,636.28/490,144.86 = 137,080.62/x
  3. Step 3: Cross multiply
    326,636.28x = 490,144.86 × 137,080.62
  4. Step 4: Simplify right side
    326,636.28x = 67,189,361,298.61
  5. Step 5: Solve for x
    x = 67,189,361,298.61/326,636.28
  6. Step 6: Final answer
    x = 205,700.85

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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.