Home / 205,079,138.40-307,760,425.20-147,620,524.80

Finding the Fourth Proportional to 205,079,138.40, 307,760,425.20 and 147,620,524.80

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Solution

The fourth proportional to 205,079,138.40, 307,760,425.20 and 147,620,524.80 is: 221,532,798.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,079,138.40 : 307,760,425.20 = 147,620,524.80 : x
  2. Step 2: Convert to fraction form
    205,079,138.40/307,760,425.20 = 147,620,524.80/x
  3. Step 3: Cross multiply
    205,079,138.40x = 307,760,425.20 × 147,620,524.80
  4. Step 4: Simplify right side
    205,079,138.40x = 45,431,755,480,695,144
  5. Step 5: Solve for x
    x = 45,431,755,480,695,144/205,079,138.40
  6. Step 6: Final answer
    x = 221,532,798.68

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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.