Home / 358,123.78-494,211.27-196,979.14

Finding the Fourth Proportional to 358,123.78, 494,211.27 and 196,979.14

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Solution

The fourth proportional to 358,123.78, 494,211.27 and 196,979.14 is: 271,831.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,123.78 : 494,211.27 = 196,979.14 : x
  2. Step 2: Convert to fraction form
    358,123.78/494,211.27 = 196,979.14/x
  3. Step 3: Cross multiply
    358,123.78x = 494,211.27 × 196,979.14
  4. Step 4: Simplify right side
    358,123.78x = 97,349,310,942.91
  5. Step 5: Solve for x
    x = 97,349,310,942.91/358,123.78
  6. Step 6: Final answer
    x = 271,831.46

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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.