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Finding the Fourth Proportional to 443,270.88, 664,999.73 and 143,728.10

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Solution

The fourth proportional to 443,270.88, 664,999.73 and 143,728.10 is: 215,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,270.88 : 664,999.73 = 143,728.10 : x
  2. Step 2: Convert to fraction form
    443,270.88/664,999.73 = 143,728.10/x
  3. Step 3: Cross multiply
    443,270.88x = 664,999.73 × 143,728.10
  4. Step 4: Simplify right side
    443,270.88x = 95,579,146,974.77
  5. Step 5: Solve for x
    x = 95,579,146,974.77/443,270.88
  6. Step 6: Final answer
    x = 215,622.44

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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.