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Finding the Fourth Proportional to 324,097.20, 485,915.40 and 124,340.40

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Solution

The fourth proportional to 324,097.20, 485,915.40 and 124,340.40 is: 186,422.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,097.20 : 485,915.40 = 124,340.40 : x
  2. Step 2: Convert to fraction form
    324,097.20/485,915.40 = 124,340.40/x
  3. Step 3: Cross multiply
    324,097.20x = 485,915.40 × 124,340.40
  4. Step 4: Simplify right side
    324,097.20x = 60,418,915,202.16
  5. Step 5: Solve for x
    x = 60,418,915,202.16/324,097.20
  6. Step 6: Final answer
    x = 186,422.21

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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.