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Finding the Fourth Proportional to 342,660.52, 472,921 and 197,438.49

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Solution

The fourth proportional to 342,660.52, 472,921 and 197,438.49 is: 272,493.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,660.52 : 472,921 = 197,438.49 : x
  2. Step 2: Convert to fraction form
    342,660.52/472,921 = 197,438.49/x
  3. Step 3: Cross multiply
    342,660.52x = 472,921 × 197,438.49
  4. Step 4: Simplify right side
    342,660.52x = 93,372,805,764.69
  5. Step 5: Solve for x
    x = 93,372,805,764.69/342,660.52
  6. Step 6: Final answer
    x = 272,493.62

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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.