Home / 289,212.84-431,850.51-255,195.36

Finding the Fourth Proportional to 289,212.84, 431,850.51 and 255,195.36

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Solution

The fourth proportional to 289,212.84, 431,850.51 and 255,195.36 is: 381,055.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,212.84 : 431,850.51 = 255,195.36 : x
  2. Step 2: Convert to fraction form
    289,212.84/431,850.51 = 255,195.36/x
  3. Step 3: Cross multiply
    289,212.84x = 431,850.51 × 255,195.36
  4. Step 4: Simplify right side
    289,212.84x = 110,206,246,365.63
  5. Step 5: Solve for x
    x = 110,206,246,365.63/289,212.84
  6. Step 6: Final answer
    x = 381,055.86

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1.5x scale

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.