Home / 408,437,143.20-612,575,998.65-135,807,910.20

Finding the Fourth Proportional to 408,437,143.20, 612,575,998.65 and 135,807,910.20

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Solution

The fourth proportional to 408,437,143.20, 612,575,998.65 and 135,807,910.20 is: 203,685,359.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,437,143.20 : 612,575,998.65 = 135,807,910.20 : x
  2. Step 2: Convert to fraction form
    408,437,143.20/612,575,998.65 = 135,807,910.20/x
  3. Step 3: Cross multiply
    408,437,143.20x = 612,575,998.65 × 135,807,910.20
  4. Step 4: Simplify right side
    408,437,143.20x = 83,192,666,215,334,512
  5. Step 5: Solve for x
    x = 83,192,666,215,334,512/408,437,143.20
  6. Step 6: Final answer
    x = 203,685,359.18

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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.