Home / 279,945,009.40-419,917,514.10-75,493,751.80

Finding the Fourth Proportional to 279,945,009.40, 419,917,514.10 and 75,493,751.80

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Solution

The fourth proportional to 279,945,009.40, 419,917,514.10 and 75,493,751.80 is: 113,240,627.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,945,009.40 : 419,917,514.10 = 75,493,751.80 : x
  2. Step 2: Convert to fraction form
    279,945,009.40/419,917,514.10 = 75,493,751.80/x
  3. Step 3: Cross multiply
    279,945,009.40x = 419,917,514.10 × 75,493,751.80
  4. Step 4: Simplify right side
    279,945,009.40x = 31,701,148,585,938,400
  5. Step 5: Solve for x
    x = 31,701,148,585,938,400/279,945,009.40
  6. Step 6: Final answer
    x = 113,240,627.70

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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.