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Finding the Fourth Proportional to 217,630.80, 326,314.98 and 99,401.58

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Solution

The fourth proportional to 217,630.80, 326,314.98 and 99,401.58 is: 149,042.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,630.80 : 326,314.98 = 99,401.58 : x
  2. Step 2: Convert to fraction form
    217,630.80/326,314.98 = 99,401.58/x
  3. Step 3: Cross multiply
    217,630.80x = 326,314.98 × 99,401.58
  4. Step 4: Simplify right side
    217,630.80x = 32,436,224,589.67
  5. Step 5: Solve for x
    x = 32,436,224,589.67/217,630.80
  6. Step 6: Final answer
    x = 149,042.44

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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.