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Finding the Fourth Proportional to 206,425.04, 309,598.68 and 80,065.04

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Solution

The fourth proportional to 206,425.04, 309,598.68 and 80,065.04 is: 120,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,425.04 : 309,598.68 = 80,065.04 : x
  2. Step 2: Convert to fraction form
    206,425.04/309,598.68 = 80,065.04/x
  3. Step 3: Cross multiply
    206,425.04x = 309,598.68 × 80,065.04
  4. Step 4: Simplify right side
    206,425.04x = 24,788,030,698.15
  5. Step 5: Solve for x
    x = 24,788,030,698.15/206,425.04
  6. Step 6: Final answer
    x = 120,082.48

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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.