Home / 275,231.51-379,789.12-154,347.92

Finding the Fourth Proportional to 275,231.51, 379,789.12 and 154,347.92

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Solution

The fourth proportional to 275,231.51, 379,789.12 and 154,347.92 is: 212,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,231.51 : 379,789.12 = 154,347.92 : x
  2. Step 2: Convert to fraction form
    275,231.51/379,789.12 = 154,347.92/x
  3. Step 3: Cross multiply
    275,231.51x = 379,789.12 × 154,347.92
  4. Step 4: Simplify right side
    275,231.51x = 58,619,659,938.89
  5. Step 5: Solve for x
    x = 58,619,659,938.89/275,231.51
  6. Step 6: Final answer
    x = 212,983.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.