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Finding the Fourth Proportional to 486,299.48, 729,486.10 and 131,308.34

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Solution

The fourth proportional to 486,299.48, 729,486.10 and 131,308.34 is: 196,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,299.48 : 729,486.10 = 131,308.34 : x
  2. Step 2: Convert to fraction form
    486,299.48/729,486.10 = 131,308.34/x
  3. Step 3: Cross multiply
    486,299.48x = 729,486.10 × 131,308.34
  4. Step 4: Simplify right side
    486,299.48x = 95,787,608,844.07
  5. Step 5: Solve for x
    x = 95,787,608,844.07/486,299.48
  6. Step 6: Final answer
    x = 196,972.47

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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.