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Finding the Fourth Proportional to 247,688.60, 341,813.25 and 140,255.87

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Solution

The fourth proportional to 247,688.60, 341,813.25 and 140,255.87 is: 193,554.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,688.60 : 341,813.25 = 140,255.87 : x
  2. Step 2: Convert to fraction form
    247,688.60/341,813.25 = 140,255.87/x
  3. Step 3: Cross multiply
    247,688.60x = 341,813.25 × 140,255.87
  4. Step 4: Simplify right side
    247,688.60x = 47,941,313,047.21
  5. Step 5: Solve for x
    x = 47,941,313,047.21/247,688.60
  6. Step 6: Final answer
    x = 193,554.79

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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.