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Finding the Fourth Proportional to 247,167.72, 341,078.22 and 139,731.30

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Solution

The fourth proportional to 247,167.72, 341,078.22 and 139,731.30 is: 192,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,167.72 : 341,078.22 = 139,731.30 : x
  2. Step 2: Convert to fraction form
    247,167.72/341,078.22 = 139,731.30/x
  3. Step 3: Cross multiply
    247,167.72x = 341,078.22 × 139,731.30
  4. Step 4: Simplify right side
    247,167.72x = 47,659,303,082.29
  5. Step 5: Solve for x
    x = 47,659,303,082.29/247,167.72
  6. Step 6: Final answer
    x = 192,821.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.