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Finding the Fourth Proportional to 324,866.40, 487,299.60 and 137,853.60

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Solution

The fourth proportional to 324,866.40, 487,299.60 and 137,853.60 is: 206,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,866.40 : 487,299.60 = 137,853.60 : x
  2. Step 2: Convert to fraction form
    324,866.40/487,299.60 = 137,853.60/x
  3. Step 3: Cross multiply
    324,866.40x = 487,299.60 × 137,853.60
  4. Step 4: Simplify right side
    324,866.40x = 67,176,004,138.56
  5. Step 5: Solve for x
    x = 67,176,004,138.56/324,866.40
  6. Step 6: Final answer
    x = 206,780.40

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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.