Home / 443,140.31-664,571.05-143,551.39

Finding the Fourth Proportional to 443,140.31, 664,571.05 and 143,551.39

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Solution

The fourth proportional to 443,140.31, 664,571.05 and 143,551.39 is: 215,281.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,140.31 : 664,571.05 = 143,551.39 : x
  2. Step 2: Convert to fraction form
    443,140.31/664,571.05 = 143,551.39/x
  3. Step 3: Cross multiply
    443,140.31x = 664,571.05 × 143,551.39
  4. Step 4: Simplify right side
    443,140.31x = 95,400,094,984.04
  5. Step 5: Solve for x
    x = 95,400,094,984.04/443,140.31
  6. Step 6: Final answer
    x = 215,281.91

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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.