Home / 250,280.72-345,385.30-135,556.70

Finding the Fourth Proportional to 250,280.72, 345,385.30 and 135,556.70

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Solution

The fourth proportional to 250,280.72, 345,385.30 and 135,556.70 is: 187,067.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,280.72 : 345,385.30 = 135,556.70 : x
  2. Step 2: Convert to fraction form
    250,280.72/345,385.30 = 135,556.70/x
  3. Step 3: Cross multiply
    250,280.72x = 345,385.30 × 135,556.70
  4. Step 4: Simplify right side
    250,280.72x = 46,819,291,496.51
  5. Step 5: Solve for x
    x = 46,819,291,496.51/250,280.72
  6. Step 6: Final answer
    x = 187,067.11

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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.