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Finding the Fourth Proportional to 279,761.82, 385,955.72 and 194,928.08

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Solution

The fourth proportional to 279,761.82, 385,955.72 and 194,928.08 is: 268,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,761.82 : 385,955.72 = 194,928.08 : x
  2. Step 2: Convert to fraction form
    279,761.82/385,955.72 = 194,928.08/x
  3. Step 3: Cross multiply
    279,761.82x = 385,955.72 × 194,928.08
  4. Step 4: Simplify right side
    279,761.82x = 75,233,607,464.62
  5. Step 5: Solve for x
    x = 75,233,607,464.62/279,761.82
  6. Step 6: Final answer
    x = 268,920.21

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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.