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Finding the Fourth Proportional to 304,640.85, 420,375.19 and 168,669.82

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Solution

The fourth proportional to 304,640.85, 420,375.19 and 168,669.82 is: 232,748.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,640.85 : 420,375.19 = 168,669.82 : x
  2. Step 2: Convert to fraction form
    304,640.85/420,375.19 = 168,669.82/x
  3. Step 3: Cross multiply
    304,640.85x = 420,375.19 × 168,669.82
  4. Step 4: Simplify right side
    304,640.85x = 70,904,607,629.77
  5. Step 5: Solve for x
    x = 70,904,607,629.77/304,640.85
  6. Step 6: Final answer
    x = 232,748.19

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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.