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Finding the Fourth Proportional to 251,947, 347,975.22 and 171,238.60

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Solution

The fourth proportional to 251,947, 347,975.22 and 171,238.60 is: 236,505.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,947 : 347,975.22 = 171,238.60 : x
  2. Step 2: Convert to fraction form
    251,947/347,975.22 = 171,238.60/x
  3. Step 3: Cross multiply
    251,947x = 347,975.22 × 171,238.60
  4. Step 4: Simplify right side
    251,947x = 59,586,789,507.49
  5. Step 5: Solve for x
    x = 59,586,789,507.49/251,947
  6. Step 6: Final answer
    x = 236,505.26

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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.