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Finding the Fourth Proportional to 443,143.95, 664,576.48 and 143,555.01

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Solution

The fourth proportional to 443,143.95, 664,576.48 and 143,555.01 is: 215,287.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,143.95 : 664,576.48 = 143,555.01 : x
  2. Step 2: Convert to fraction form
    443,143.95/664,576.48 = 143,555.01/x
  3. Step 3: Cross multiply
    443,143.95x = 664,576.48 × 143,555.01
  4. Step 4: Simplify right side
    443,143.95x = 95,403,283,232.16
  5. Step 5: Solve for x
    x = 95,403,283,232.16/443,143.95
  6. Step 6: Final answer
    x = 215,287.34

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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.