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Finding the Fourth Proportional to 257,899.31, 386,345.73 and 168,882.94

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Solution

The fourth proportional to 257,899.31, 386,345.73 and 168,882.94 is: 252,994.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,899.31 : 386,345.73 = 168,882.94 : x
  2. Step 2: Convert to fraction form
    257,899.31/386,345.73 = 168,882.94/x
  3. Step 3: Cross multiply
    257,899.31x = 386,345.73 × 168,882.94
  4. Step 4: Simplify right side
    257,899.31x = 65,247,203,245.09
  5. Step 5: Solve for x
    x = 65,247,203,245.09/257,899.31
  6. Step 6: Final answer
    x = 252,994.87

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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.