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Finding the Fourth Proportional to 257,495.44, 386,242.62 and 80,003.92

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Solution

The fourth proportional to 257,495.44, 386,242.62 and 80,003.92 is: 120,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,495.44 : 386,242.62 = 80,003.92 : x
  2. Step 2: Convert to fraction form
    257,495.44/386,242.62 = 80,003.92/x
  3. Step 3: Cross multiply
    257,495.44x = 386,242.62 × 80,003.92
  4. Step 4: Simplify right side
    257,495.44x = 30,900,923,671.07
  5. Step 5: Solve for x
    x = 30,900,923,671.07/257,495.44
  6. Step 6: Final answer
    x = 120,005.71

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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.