Home / 258,013.26-387,044.33-100,253.88

Finding the Fourth Proportional to 258,013.26, 387,044.33 and 100,253.88

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Solution

The fourth proportional to 258,013.26, 387,044.33 and 100,253.88 is: 150,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,013.26 : 387,044.33 = 100,253.88 : x
  2. Step 2: Convert to fraction form
    258,013.26/387,044.33 = 100,253.88/x
  3. Step 3: Cross multiply
    258,013.26x = 387,044.33 × 100,253.88
  4. Step 4: Simplify right side
    258,013.26x = 38,802,695,313.23
  5. Step 5: Solve for x
    x = 38,802,695,313.23/258,013.26
  6. Step 6: Final answer
    x = 150,390.31

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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.