Home / 321,371.55-481,862.93-143,845.47

Finding the Fourth Proportional to 321,371.55, 481,862.93 and 143,845.47

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Solution

The fourth proportional to 321,371.55, 481,862.93 and 143,845.47 is: 215,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,371.55 : 481,862.93 = 143,845.47 : x
  2. Step 2: Convert to fraction form
    321,371.55/481,862.93 = 143,845.47/x
  3. Step 3: Cross multiply
    321,371.55x = 481,862.93 × 143,845.47
  4. Step 4: Simplify right side
    321,371.55x = 69,313,798,922.20
  5. Step 5: Solve for x
    x = 69,313,798,922.20/321,371.55
  6. Step 6: Final answer
    x = 215,681.19

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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.