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Finding the Fourth Proportional to 324,924.40, 487,213.80 and 137,724.40

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Solution

The fourth proportional to 324,924.40, 487,213.80 and 137,724.40 is: 206,513.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,924.40 : 487,213.80 = 137,724.40 : x
  2. Step 2: Convert to fraction form
    324,924.40/487,213.80 = 137,724.40/x
  3. Step 3: Cross multiply
    324,924.40x = 487,213.80 × 137,724.40
  4. Step 4: Simplify right side
    324,924.40x = 67,101,228,276.72
  5. Step 5: Solve for x
    x = 67,101,228,276.72/324,924.40
  6. Step 6: Final answer
    x = 206,513.36

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1.5x scale

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.