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Finding the Fourth Proportional to 398,747.04, 597,945 and 145,961.88

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Solution

The fourth proportional to 398,747.04, 597,945 and 145,961.88 is: 218,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,747.04 : 597,945 = 145,961.88 : x
  2. Step 2: Convert to fraction form
    398,747.04/597,945 = 145,961.88/x
  3. Step 3: Cross multiply
    398,747.04x = 597,945 × 145,961.88
  4. Step 4: Simplify right side
    398,747.04x = 87,277,176,336.60
  5. Step 5: Solve for x
    x = 87,277,176,336.60/398,747.04
  6. Step 6: Final answer
    x = 218,878.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.