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Finding the Fourth Proportional to 256,478.96, 384,726.26 and 87,996.92

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Solution

The fourth proportional to 256,478.96, 384,726.26 and 87,996.92 is: 131,998.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,478.96 : 384,726.26 = 87,996.92 : x
  2. Step 2: Convert to fraction form
    256,478.96/384,726.26 = 87,996.92/x
  3. Step 3: Cross multiply
    256,478.96x = 384,726.26 × 87,996.92
  4. Step 4: Simplify right side
    256,478.96x = 33,854,723,724.50
  5. Step 5: Solve for x
    x = 33,854,723,724.50/256,478.96
  6. Step 6: Final answer
    x = 131,998.06

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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.