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Finding the Fourth Proportional to 206,137.85, 309,250.92 and 63,980.15

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Solution

The fourth proportional to 206,137.85, 309,250.92 and 63,980.15 is: 95,983.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,137.85 : 309,250.92 = 63,980.15 : x
  2. Step 2: Convert to fraction form
    206,137.85/309,250.92 = 63,980.15/x
  3. Step 3: Cross multiply
    206,137.85x = 309,250.92 × 63,980.15
  4. Step 4: Simplify right side
    206,137.85x = 19,785,920,249.24
  5. Step 5: Solve for x
    x = 19,785,920,249.24/206,137.85
  6. Step 6: Final answer
    x = 95,983.93

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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.