Home / 250,418.30-345,575.27-137,240.78

Finding the Fourth Proportional to 250,418.30, 345,575.27 and 137,240.78

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Solution

The fourth proportional to 250,418.30, 345,575.27 and 137,240.78 is: 189,391.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,418.30 : 345,575.27 = 137,240.78 : x
  2. Step 2: Convert to fraction form
    250,418.30/345,575.27 = 137,240.78/x
  3. Step 3: Cross multiply
    250,418.30x = 345,575.27 × 137,240.78
  4. Step 4: Simplify right side
    250,418.30x = 47,427,019,603.51
  5. Step 5: Solve for x
    x = 47,427,019,603.51/250,418.30
  6. Step 6: Final answer
    x = 189,391.19

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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.