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Finding the Fourth Proportional to 322,406.20, 482,687.70 and 313,190.20

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Solution

The fourth proportional to 322,406.20, 482,687.70 and 313,190.20 is: 468,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,406.20 : 482,687.70 = 313,190.20 : x
  2. Step 2: Convert to fraction form
    322,406.20/482,687.70 = 313,190.20/x
  3. Step 3: Cross multiply
    322,406.20x = 482,687.70 × 313,190.20
  4. Step 4: Simplify right side
    322,406.20x = 151,173,057,300.54
  5. Step 5: Solve for x
    x = 151,173,057,300.54/322,406.20
  6. Step 6: Final answer
    x = 468,890.04

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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.