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Finding the Fourth Proportional to 308,940.30, 425,974.38 and 247,637.48

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Solution

The fourth proportional to 308,940.30, 425,974.38 and 247,637.48 is: 341,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,940.30 : 425,974.38 = 247,637.48 : x
  2. Step 2: Convert to fraction form
    308,940.30/425,974.38 = 247,637.48/x
  3. Step 3: Cross multiply
    308,940.30x = 425,974.38 × 247,637.48
  4. Step 4: Simplify right side
    308,940.30x = 105,487,219,877.89
  5. Step 5: Solve for x
    x = 105,487,219,877.89/308,940.30
  6. Step 6: Final answer
    x = 341,448.56

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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.