Home / 356,109.78-491,432.93-194,979.83

Finding the Fourth Proportional to 356,109.78, 491,432.93 and 194,979.83

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Solution

The fourth proportional to 356,109.78, 491,432.93 and 194,979.83 is: 269,072.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,109.78 : 491,432.93 = 194,979.83 : x
  2. Step 2: Convert to fraction form
    356,109.78/491,432.93 = 194,979.83/x
  3. Step 3: Cross multiply
    356,109.78x = 491,432.93 × 194,979.83
  4. Step 4: Simplify right side
    356,109.78x = 95,819,506,690.64
  5. Step 5: Solve for x
    x = 95,819,506,690.64/356,109.78
  6. Step 6: Final answer
    x = 269,072.94

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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.