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Finding the Fourth Proportional to 250,667.90, 345,920.27 and 135,945.39

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Solution

The fourth proportional to 250,667.90, 345,920.27 and 135,945.39 is: 187,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,667.90 : 345,920.27 = 135,945.39 : x
  2. Step 2: Convert to fraction form
    250,667.90/345,920.27 = 135,945.39/x
  3. Step 3: Cross multiply
    250,667.90x = 345,920.27 × 135,945.39
  4. Step 4: Simplify right side
    250,667.90x = 47,026,265,334.33
  5. Step 5: Solve for x
    x = 47,026,265,334.33/250,667.90
  6. Step 6: Final answer
    x = 187,603.86

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1.5x scale

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.