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Finding the Fourth Proportional to 312,622.62, 468,838.17 and 112,918.38

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Solution

The fourth proportional to 312,622.62, 468,838.17 and 112,918.38 is: 169,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,622.62 : 468,838.17 = 112,918.38 : x
  2. Step 2: Convert to fraction form
    312,622.62/468,838.17 = 112,918.38/x
  3. Step 3: Cross multiply
    312,622.62x = 468,838.17 × 112,918.38
  4. Step 4: Simplify right side
    312,622.62x = 52,940,446,638.56
  5. Step 5: Solve for x
    x = 52,940,446,638.56/312,622.62
  6. Step 6: Final answer
    x = 169,342.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.