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Finding the Fourth Proportional to 308,544.78, 425,786.14 and 174,408.78

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Solution

The fourth proportional to 308,544.78, 425,786.14 and 174,408.78 is: 240,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,544.78 : 425,786.14 = 174,408.78 : x
  2. Step 2: Convert to fraction form
    308,544.78/425,786.14 = 174,408.78/x
  3. Step 3: Cross multiply
    308,544.78x = 425,786.14 × 174,408.78
  4. Step 4: Simplify right side
    308,544.78x = 74,260,841,218.31
  5. Step 5: Solve for x
    x = 74,260,841,218.31/308,544.78
  6. Step 6: Final answer
    x = 240,680.92

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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.