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Finding the Fourth Proportional to 309,553.65, 427,177.38 and 173,584.62

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Solution

The fourth proportional to 309,553.65, 427,177.38 and 173,584.62 is: 239,543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,553.65 : 427,177.38 = 173,584.62 : x
  2. Step 2: Convert to fraction form
    309,553.65/427,177.38 = 173,584.62/x
  3. Step 3: Cross multiply
    309,553.65x = 427,177.38 × 173,584.62
  4. Step 4: Simplify right side
    309,553.65x = 74,151,420,176.09
  5. Step 5: Solve for x
    x = 74,151,420,176.09/309,553.65
  6. Step 6: Final answer
    x = 239,543.03

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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.