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Finding the Fourth Proportional to 308,563.71, 425,646.54 and 179,487.78

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Solution

The fourth proportional to 308,563.71, 425,646.54 and 179,487.78 is: 247,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,563.71 : 425,646.54 = 179,487.78 : x
  2. Step 2: Convert to fraction form
    308,563.71/425,646.54 = 179,487.78/x
  3. Step 3: Cross multiply
    308,563.71x = 425,646.54 × 179,487.78
  4. Step 4: Simplify right side
    308,563.71x = 76,398,352,529.28
  5. Step 5: Solve for x
    x = 76,398,352,529.28/308,563.71
  6. Step 6: Final answer
    x = 247,593.45

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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.