Home / 198,432,740.25-308,496,595.78

Finding the Third Proportional to 198,432,740.25 and 308,496,595.78

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Solution

The third proportional to 198,432,740.25 and 308,496,595.78 is: 479,609,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,432,740.25 : 308,496,595.78 = 308,496,595.78 : x
  2. Step 2: Convert to fraction form
    198,432,740.25/308,496,595.78 = 308,496,595.78/x
  3. Step 3: Cross multiply
    198,432,740.25x = 308,496,595.78 × 308,496,595.78
  4. Step 4: Simplify right side
    198,432,740.25x = 95,170,149,608,619,952
  5. Step 5: Solve for x
    x = 95,170,149,608,619,952/198,432,740.25
  6. Step 6: Final answer
    x = 479,609,108.30

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.