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Finding the Fourth Proportional to 247,563.64, 341,609.70 and 138,672.10

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Solution

The fourth proportional to 247,563.64, 341,609.70 and 138,672.10 is: 191,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,563.64 : 341,609.70 = 138,672.10 : x
  2. Step 2: Convert to fraction form
    247,563.64/341,609.70 = 138,672.10/x
  3. Step 3: Cross multiply
    247,563.64x = 341,609.70 × 138,672.10
  4. Step 4: Simplify right side
    247,563.64x = 47,371,734,479.37
  5. Step 5: Solve for x
    x = 47,371,734,479.37/247,563.64
  6. Step 6: Final answer
    x = 191,351.74

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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.