Home / 256,215.12-384,321.24-87,736.92

Finding the Fourth Proportional to 256,215.12, 384,321.24 and 87,736.92

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Solution

The fourth proportional to 256,215.12, 384,321.24 and 87,736.92 is: 131,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,215.12 : 384,321.24 = 87,736.92 : x
  2. Step 2: Convert to fraction form
    256,215.12/384,321.24 = 87,736.92/x
  3. Step 3: Cross multiply
    256,215.12x = 384,321.24 × 87,736.92
  4. Step 4: Simplify right side
    256,215.12x = 33,719,161,888.18
  5. Step 5: Solve for x
    x = 33,719,161,888.18/256,215.12
  6. Step 6: Final answer
    x = 131,604.89

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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.