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Finding the Fourth Proportional to 220,573,690.80, 330,860,536.20 and 123,827,809.20

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Solution

The fourth proportional to 220,573,690.80, 330,860,536.20 and 123,827,809.20 is: 185,741,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,573,690.80 : 330,860,536.20 = 123,827,809.20 : x
  2. Step 2: Convert to fraction form
    220,573,690.80/330,860,536.20 = 123,827,809.20/x
  3. Step 3: Cross multiply
    220,573,690.80x = 330,860,536.20 × 123,827,809.20
  4. Step 4: Simplify right side
    220,573,690.80x = 40,969,735,348,383,296
  5. Step 5: Solve for x
    x = 40,969,735,348,383,296/220,573,690.80
  6. Step 6: Final answer
    x = 185,741,713.80

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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.