Home / 326,515.10-489,116.55-220,226.90

Finding the Fourth Proportional to 326,515.10, 489,116.55 and 220,226.90

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Solution

The fourth proportional to 326,515.10, 489,116.55 and 220,226.90 is: 329,897.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,515.10 : 489,116.55 = 220,226.90 : x
  2. Step 2: Convert to fraction form
    326,515.10/489,116.55 = 220,226.90/x
  3. Step 3: Cross multiply
    326,515.10x = 489,116.55 × 220,226.90
  4. Step 4: Simplify right side
    326,515.10x = 107,716,621,545.20
  5. Step 5: Solve for x
    x = 107,716,621,545.20/326,515.10
  6. Step 6: Final answer
    x = 329,897.83

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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.