Home / 326,986.20-490,423.95-90,329.57

Finding the Fourth Proportional to 326,986.20, 490,423.95 and 90,329.57

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Solution

The fourth proportional to 326,986.20, 490,423.95 and 90,329.57 is: 135,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,986.20 : 490,423.95 = 90,329.57 : x
  2. Step 2: Convert to fraction form
    326,986.20/490,423.95 = 90,329.57/x
  3. Step 3: Cross multiply
    326,986.20x = 490,423.95 × 90,329.57
  4. Step 4: Simplify right side
    326,986.20x = 44,299,784,521.20
  5. Step 5: Solve for x
    x = 44,299,784,521.20/326,986.20
  6. Step 6: Final answer
    x = 135,479.06

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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.