Home / 252,391,393.80-378,622,520.10-79,850,215.80

Finding the Fourth Proportional to 252,391,393.80, 378,622,520.10 and 79,850,215.80

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Solution

The fourth proportional to 252,391,393.80, 378,622,520.10 and 79,850,215.80 is: 119,786,532.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,391,393.80 : 378,622,520.10 = 79,850,215.80 : x
  2. Step 2: Convert to fraction form
    252,391,393.80/378,622,520.10 = 79,850,215.80/x
  3. Step 3: Cross multiply
    252,391,393.80x = 378,622,520.10 × 79,850,215.80
  4. Step 4: Simplify right side
    252,391,393.80x = 30,233,089,936,724,840
  5. Step 5: Solve for x
    x = 30,233,089,936,724,840/252,391,393.80
  6. Step 6: Final answer
    x = 119,786,532.66

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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.