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Finding the Fourth Proportional to 321,024.90, 481,734.18 and 143,681.88

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Solution

The fourth proportional to 321,024.90, 481,734.18 and 143,681.88 is: 215,610.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,024.90 : 481,734.18 = 143,681.88 : x
  2. Step 2: Convert to fraction form
    321,024.90/481,734.18 = 143,681.88/x
  3. Step 3: Cross multiply
    321,024.90x = 481,734.18 × 143,681.88
  4. Step 4: Simplify right side
    321,024.90x = 69,216,472,642.66
  5. Step 5: Solve for x
    x = 69,216,472,642.66/321,024.90
  6. Step 6: Final answer
    x = 215,610.92

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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.