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Finding the Fourth Proportional to 332,980, 499,470.48 and 135,988

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Solution

The fourth proportional to 332,980, 499,470.48 and 135,988 is: 203,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,980 : 499,470.48 = 135,988 : x
  2. Step 2: Convert to fraction form
    332,980/499,470.48 = 135,988/x
  3. Step 3: Cross multiply
    332,980x = 499,470.48 × 135,988
  4. Step 4: Simplify right side
    332,980x = 67,921,991,634.24
  5. Step 5: Solve for x
    x = 67,921,991,634.24/332,980
  6. Step 6: Final answer
    x = 203,982.20

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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.