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Finding the Fourth Proportional to 324,593.11, 486,889.67 and 212,979.57

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Solution

The fourth proportional to 324,593.11, 486,889.67 and 212,979.57 is: 319,469.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,593.11 : 486,889.67 = 212,979.57 : x
  2. Step 2: Convert to fraction form
    324,593.11/486,889.67 = 212,979.57/x
  3. Step 3: Cross multiply
    324,593.11x = 486,889.67 × 212,979.57
  4. Step 4: Simplify right side
    324,593.11x = 103,697,552,554.04
  5. Step 5: Solve for x
    x = 103,697,552,554.04/324,593.11
  6. Step 6: Final answer
    x = 319,469.36

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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.