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Finding the Fourth Proportional to 321,124.10, 481,686.15 and 96,519.20

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Solution

The fourth proportional to 321,124.10, 481,686.15 and 96,519.20 is: 144,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,124.10 : 481,686.15 = 96,519.20 : x
  2. Step 2: Convert to fraction form
    321,124.10/481,686.15 = 96,519.20/x
  3. Step 3: Cross multiply
    321,124.10x = 481,686.15 × 96,519.20
  4. Step 4: Simplify right side
    321,124.10x = 46,491,961,849.08
  5. Step 5: Solve for x
    x = 46,491,961,849.08/321,124.10
  6. Step 6: Final answer
    x = 144,778.80

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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.