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Finding the Fourth Proportional to 247,214.72, 341,163 and 139,800.75

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Solution

The fourth proportional to 247,214.72, 341,163 and 139,800.75 is: 192,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,214.72 : 341,163 = 139,800.75 : x
  2. Step 2: Convert to fraction form
    247,214.72/341,163 = 139,800.75/x
  3. Step 3: Cross multiply
    247,214.72x = 341,163 × 139,800.75
  4. Step 4: Simplify right side
    247,214.72x = 47,694,843,272.25
  5. Step 5: Solve for x
    x = 47,694,843,272.25/247,214.72
  6. Step 6: Final answer
    x = 192,928.82

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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.