Home / 206,623.20-309,934.80-180,379.20

Finding the Fourth Proportional to 206,623.20, 309,934.80 and 180,379.20

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Solution

The fourth proportional to 206,623.20, 309,934.80 and 180,379.20 is: 270,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,623.20 : 309,934.80 = 180,379.20 : x
  2. Step 2: Convert to fraction form
    206,623.20/309,934.80 = 180,379.20/x
  3. Step 3: Cross multiply
    206,623.20x = 309,934.80 × 180,379.20
  4. Step 4: Simplify right side
    206,623.20x = 55,905,791,276.16
  5. Step 5: Solve for x
    x = 55,905,791,276.16/206,623.20
  6. Step 6: Final answer
    x = 270,568.80

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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.