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Finding the Fourth Proportional to 254,680.80, 382,021.20 and 67,711.20

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Solution

The fourth proportional to 254,680.80, 382,021.20 and 67,711.20 is: 101,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,680.80 : 382,021.20 = 67,711.20 : x
  2. Step 2: Convert to fraction form
    254,680.80/382,021.20 = 67,711.20/x
  3. Step 3: Cross multiply
    254,680.80x = 382,021.20 × 67,711.20
  4. Step 4: Simplify right side
    254,680.80x = 25,867,113,877.44
  5. Step 5: Solve for x
    x = 25,867,113,877.44/254,680.80
  6. Step 6: Final answer
    x = 101,566.80

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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.