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Finding the Fourth Proportional to 308,399.76, 425,646.12 and 179,378.16

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Solution

The fourth proportional to 308,399.76, 425,646.12 and 179,378.16 is: 247,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,399.76 : 425,646.12 = 179,378.16 : x
  2. Step 2: Convert to fraction form
    308,399.76/425,646.12 = 179,378.16/x
  3. Step 3: Cross multiply
    308,399.76x = 425,646.12 × 179,378.16
  4. Step 4: Simplify right side
    308,399.76x = 76,351,617,816.74
  5. Step 5: Solve for x
    x = 76,351,617,816.74/308,399.76
  6. Step 6: Final answer
    x = 247,573.53

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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.