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Finding the Fourth Proportional to 308,571.53, 425,860.78 and 177,753.69

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Solution

The fourth proportional to 308,571.53, 425,860.78 and 177,753.69 is: 245,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,571.53 : 425,860.78 = 177,753.69 : x
  2. Step 2: Convert to fraction form
    308,571.53/425,860.78 = 177,753.69/x
  3. Step 3: Cross multiply
    308,571.53x = 425,860.78 × 177,753.69
  4. Step 4: Simplify right side
    308,571.53x = 75,698,325,071.28
  5. Step 5: Solve for x
    x = 75,698,325,071.28/308,571.53
  6. Step 6: Final answer
    x = 245,318.57

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1.5x scale

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.