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Finding the Fourth Proportional to 408,642.80, 612,672.60 and 183,819.20

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Solution

The fourth proportional to 408,642.80, 612,672.60 and 183,819.20 is: 275,597.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,642.80 : 612,672.60 = 183,819.20 : x
  2. Step 2: Convert to fraction form
    408,642.80/612,672.60 = 183,819.20/x
  3. Step 3: Cross multiply
    408,642.80x = 612,672.60 × 183,819.20
  4. Step 4: Simplify right side
    408,642.80x = 112,620,987,193.92
  5. Step 5: Solve for x
    x = 112,620,987,193.92/408,642.80
  6. Step 6: Final answer
    x = 275,597.63

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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.