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Finding the Fourth Proportional to 321,406.20, 482,022.90 and 96,766.20

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Solution

The fourth proportional to 321,406.20, 482,022.90 and 96,766.20 is: 145,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,406.20 : 482,022.90 = 96,766.20 : x
  2. Step 2: Convert to fraction form
    321,406.20/482,022.90 = 96,766.20/x
  3. Step 3: Cross multiply
    321,406.20x = 482,022.90 × 96,766.20
  4. Step 4: Simplify right side
    321,406.20x = 46,643,524,345.98
  5. Step 5: Solve for x
    x = 46,643,524,345.98/321,406.20
  6. Step 6: Final answer
    x = 145,123.29

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1.5x scale

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.