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Finding the Fourth Proportional to 289,018.14, 398,747.72 and 168,059.97

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Solution

The fourth proportional to 289,018.14, 398,747.72 and 168,059.97 is: 231,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,018.14 : 398,747.72 = 168,059.97 : x
  2. Step 2: Convert to fraction form
    289,018.14/398,747.72 = 168,059.97/x
  3. Step 3: Cross multiply
    289,018.14x = 398,747.72 × 168,059.97
  4. Step 4: Simplify right side
    289,018.14x = 67,013,529,020.47
  5. Step 5: Solve for x
    x = 67,013,529,020.47/289,018.14
  6. Step 6: Final answer
    x = 231,866.17

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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.