Home / 751,128.30-1,126,876.78-218,654.10

Finding the Fourth Proportional to 751,128.30, 1,126,876.78 and 218,654.10

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Solution

The fourth proportional to 751,128.30, 1,126,876.78 and 218,654.10 is: 328,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,128.30 : 1,126,876.78 = 218,654.10 : x
  2. Step 2: Convert to fraction form
    751,128.30/1,126,876.78 = 218,654.10/x
  3. Step 3: Cross multiply
    751,128.30x = 1,126,876.78 × 218,654.10
  4. Step 4: Simplify right side
    751,128.30x = 246,396,228,141.80
  5. Step 5: Solve for x
    x = 246,396,228,141.80/751,128.30
  6. Step 6: Final answer
    x = 328,034.81

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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.