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Finding the Fourth Proportional to 443,117.20, 664,222.20 and 218,131.60

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Solution

The fourth proportional to 443,117.20, 664,222.20 and 218,131.60 is: 326,974.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,117.20 : 664,222.20 = 218,131.60 : x
  2. Step 2: Convert to fraction form
    443,117.20/664,222.20 = 218,131.60/x
  3. Step 3: Cross multiply
    443,117.20x = 664,222.20 × 218,131.60
  4. Step 4: Simplify right side
    443,117.20x = 144,887,851,241.52
  5. Step 5: Solve for x
    x = 144,887,851,241.52/443,117.20
  6. Step 6: Final answer
    x = 326,974.11

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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.