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Finding the Fourth Proportional to 206,335.08, 309,519 and 88,007.40

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Solution

The fourth proportional to 206,335.08, 309,519 and 88,007.40 is: 132,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,335.08 : 309,519 = 88,007.40 : x
  2. Step 2: Convert to fraction form
    206,335.08/309,519 = 88,007.40/x
  3. Step 3: Cross multiply
    206,335.08x = 309,519 × 88,007.40
  4. Step 4: Simplify right side
    206,335.08x = 27,239,962,440.60
  5. Step 5: Solve for x
    x = 27,239,962,440.60/206,335.08
  6. Step 6: Final answer
    x = 132,018.09

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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.