Home / 443,428.40-664,705.20-218,604.80

Finding the Fourth Proportional to 443,428.40, 664,705.20 and 218,604.80

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Solution

The fourth proportional to 443,428.40, 664,705.20 and 218,604.80 is: 327,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,428.40 : 664,705.20 = 218,604.80 : x
  2. Step 2: Convert to fraction form
    443,428.40/664,705.20 = 218,604.80/x
  3. Step 3: Cross multiply
    443,428.40x = 664,705.20 × 218,604.80
  4. Step 4: Simplify right side
    443,428.40x = 145,307,747,304.96
  5. Step 5: Solve for x
    x = 145,307,747,304.96/443,428.40
  6. Step 6: Final answer
    x = 327,691.57

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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.