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Finding the Fourth Proportional to 217,876.32, 326,354.88 and 99,647.04

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Solution

The fourth proportional to 217,876.32, 326,354.88 and 99,647.04 is: 149,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,876.32 : 326,354.88 = 99,647.04 : x
  2. Step 2: Convert to fraction form
    217,876.32/326,354.88 = 99,647.04/x
  3. Step 3: Cross multiply
    217,876.32x = 326,354.88 × 99,647.04
  4. Step 4: Simplify right side
    217,876.32x = 32,520,297,781.56
  5. Step 5: Solve for x
    x = 32,520,297,781.56/217,876.32
  6. Step 6: Final answer
    x = 149,260.36

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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.