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Finding the Fourth Proportional to 290,135.62, 400,553.83 and 193,313.94

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Solution

The fourth proportional to 290,135.62, 400,553.83 and 193,313.94 is: 266,884.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,135.62 : 400,553.83 = 193,313.94 : x
  2. Step 2: Convert to fraction form
    290,135.62/400,553.83 = 193,313.94/x
  3. Step 3: Cross multiply
    290,135.62x = 400,553.83 × 193,313.94
  4. Step 4: Simplify right side
    290,135.62x = 77,432,640,595.77
  5. Step 5: Solve for x
    x = 77,432,640,595.77/290,135.62
  6. Step 6: Final answer
    x = 266,884.29

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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.