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Finding the Fourth Proportional to 247,938.64, 342,155.31 and 147,336.64

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Solution

The fourth proportional to 247,938.64, 342,155.31 and 147,336.64 is: 203,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,938.64 : 342,155.31 = 147,336.64 : x
  2. Step 2: Convert to fraction form
    247,938.64/342,155.31 = 147,336.64/x
  3. Step 3: Cross multiply
    247,938.64x = 342,155.31 × 147,336.64
  4. Step 4: Simplify right side
    247,938.64x = 50,412,013,733.56
  5. Step 5: Solve for x
    x = 50,412,013,733.56/247,938.64
  6. Step 6: Final answer
    x = 203,324.56

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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.