Home / 200,555,999.10-300,833,998.65-172,814,778.90

Finding the Fourth Proportional to 200,555,999.10, 300,833,998.65 and 172,814,778.90

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Solution

The fourth proportional to 200,555,999.10, 300,833,998.65 and 172,814,778.90 is: 259,222,168.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,555,999.10 : 300,833,998.65 = 172,814,778.90 : x
  2. Step 2: Convert to fraction form
    200,555,999.10/300,833,998.65 = 172,814,778.90/x
  3. Step 3: Cross multiply
    200,555,999.10x = 300,833,998.65 × 172,814,778.90
  4. Step 4: Simplify right side
    200,555,999.10x = 51,988,560,962,302,648
  5. Step 5: Solve for x
    x = 51,988,560,962,302,648/200,555,999.10
  6. Step 6: Final answer
    x = 259,222,168.35

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1.5x scale

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.