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Finding the Fourth Proportional to 321,750.80, 482,626.20 and 298,422.80

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Solution

The fourth proportional to 321,750.80, 482,626.20 and 298,422.80 is: 447,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,750.80 : 482,626.20 = 298,422.80 : x
  2. Step 2: Convert to fraction form
    321,750.80/482,626.20 = 298,422.80/x
  3. Step 3: Cross multiply
    321,750.80x = 482,626.20 × 298,422.80
  4. Step 4: Simplify right side
    321,750.80x = 144,026,661,957.36
  5. Step 5: Solve for x
    x = 144,026,661,957.36/321,750.80
  6. Step 6: Final answer
    x = 447,634.20

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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.