Home / 253,905.39-380,895.00-135,512.15

Finding the Fourth Proportional to 253,905.39, 380,895.00 and 135,512.15

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Solution

The fourth proportional to 253,905.39, 380,895.00 and 135,512.15 is: 203,287.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,905.39 : 380,895.00 = 135,512.15 : x
  2. Step 2: Convert to fraction form
    253,905.39/380,895.00 = 135,512.15/x
  3. Step 3: Cross multiply
    253,905.39x = 380,895.00 × 135,512.15
  4. Step 4: Simplify right side
    253,905.39x = 51,615,899,414.00
  5. Step 5: Solve for x
    x = 51,615,899,414.00/253,905.39
  6. Step 6: Final answer
    x = 203,287.92

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1.5x scale

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.