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Finding the Fourth Proportional to 647,245.43, 970,867.31 and 173,930.79

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Solution

The fourth proportional to 647,245.43, 970,867.31 and 173,930.79 is: 260,895.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,245.43 : 970,867.31 = 173,930.79 : x
  2. Step 2: Convert to fraction form
    647,245.43/970,867.31 = 173,930.79/x
  3. Step 3: Cross multiply
    647,245.43x = 970,867.31 × 173,930.79
  4. Step 4: Simplify right side
    647,245.43x = 168,863,717,343.82
  5. Step 5: Solve for x
    x = 168,863,717,343.82/647,245.43
  6. Step 6: Final answer
    x = 260,895.96

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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.