Home / 408,956.07-612,936.75-218,949.51

Finding the Fourth Proportional to 408,956.07, 612,936.75 and 218,949.51

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Solution

The fourth proportional to 408,956.07, 612,936.75 and 218,949.51 is: 328,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,956.07 : 612,936.75 = 218,949.51 : x
  2. Step 2: Convert to fraction form
    408,956.07/612,936.75 = 218,949.51/x
  3. Step 3: Cross multiply
    408,956.07x = 612,936.75 × 218,949.51
  4. Step 4: Simplify right side
    408,956.07x = 134,202,201,073.49
  5. Step 5: Solve for x
    x = 134,202,201,073.49/408,956.07
  6. Step 6: Final answer
    x = 328,157.99

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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.