Home / 289,178.82-431,799.84-255,161.34

Finding the Fourth Proportional to 289,178.82, 431,799.84 and 255,161.34

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Solution

The fourth proportional to 289,178.82, 431,799.84 and 255,161.34 is: 381,005.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,178.82 : 431,799.84 = 255,161.34 : x
  2. Step 2: Convert to fraction form
    289,178.82/431,799.84 = 255,161.34/x
  3. Step 3: Cross multiply
    289,178.82x = 431,799.84 × 255,161.34
  4. Step 4: Simplify right side
    289,178.82x = 110,178,625,786.19
  5. Step 5: Solve for x
    x = 110,178,625,786.19/289,178.82
  6. Step 6: Final answer
    x = 381,005.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.