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Finding the Fourth Proportional to 285,279,200.80, 427,918,801.20 and 80,804,615.20

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Solution

The fourth proportional to 285,279,200.80, 427,918,801.20 and 80,804,615.20 is: 121,206,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,279,200.80 : 427,918,801.20 = 80,804,615.20 : x
  2. Step 2: Convert to fraction form
    285,279,200.80/427,918,801.20 = 80,804,615.20/x
  3. Step 3: Cross multiply
    285,279,200.80x = 427,918,801.20 × 80,804,615.20
  4. Step 4: Simplify right side
    285,279,200.80x = 34,577,814,067,811,300
  5. Step 5: Solve for x
    x = 34,577,814,067,811,300/285,279,200.80
  6. Step 6: Final answer
    x = 121,206,922.80

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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.