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Finding the Fourth Proportional to 254,447.12, 381,670.76 and 85,967.96

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Solution

The fourth proportional to 254,447.12, 381,670.76 and 85,967.96 is: 128,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,447.12 : 381,670.76 = 85,967.96 : x
  2. Step 2: Convert to fraction form
    254,447.12/381,670.76 = 85,967.96/x
  3. Step 3: Cross multiply
    254,447.12x = 381,670.76 × 85,967.96
  4. Step 4: Simplify right side
    254,447.12x = 32,811,456,628.85
  5. Step 5: Solve for x
    x = 32,811,456,628.85/254,447.12
  6. Step 6: Final answer
    x = 128,951.97

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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.