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Finding the Fourth Proportional to 443,132.70, 664,245.45 and 218,147.10

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Solution

The fourth proportional to 443,132.70, 664,245.45 and 218,147.10 is: 326,997.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,132.70 : 664,245.45 = 218,147.10 : x
  2. Step 2: Convert to fraction form
    443,132.70/664,245.45 = 218,147.10/x
  3. Step 3: Cross multiply
    443,132.70x = 664,245.45 × 218,147.10
  4. Step 4: Simplify right side
    443,132.70x = 144,903,218,605.70
  5. Step 5: Solve for x
    x = 144,903,218,605.70/443,132.70
  6. Step 6: Final answer
    x = 326,997.35

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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.