Home / 408,241,331.40-612,361,997.10-135,612,098.40

Finding the Fourth Proportional to 408,241,331.40, 612,361,997.10 and 135,612,098.40

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Solution

The fourth proportional to 408,241,331.40, 612,361,997.10 and 135,612,098.40 is: 203,418,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,241,331.40 : 612,361,997.10 = 135,612,098.40 : x
  2. Step 2: Convert to fraction form
    408,241,331.40/612,361,997.10 = 135,612,098.40/x
  3. Step 3: Cross multiply
    408,241,331.40x = 612,361,997.10 × 135,612,098.40
  4. Step 4: Simplify right side
    408,241,331.40x = 83,043,695,407,145,728
  5. Step 5: Solve for x
    x = 83,043,695,407,145,728/408,241,331.40
  6. Step 6: Final answer
    x = 203,418,147.60

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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.