Home / 279,620.94-385,754.07-188,943.78

Finding the Fourth Proportional to 279,620.94, 385,754.07 and 188,943.78

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Solution

The fourth proportional to 279,620.94, 385,754.07 and 188,943.78 is: 260,659.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,620.94 : 385,754.07 = 188,943.78 : x
  2. Step 2: Convert to fraction form
    279,620.94/385,754.07 = 188,943.78/x
  3. Step 3: Cross multiply
    279,620.94x = 385,754.07 × 188,943.78
  4. Step 4: Simplify right side
    279,620.94x = 72,885,832,136.18
  5. Step 5: Solve for x
    x = 72,885,832,136.18/279,620.94
  6. Step 6: Final answer
    x = 260,659.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.