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Finding the Fourth Proportional to 251,975.78, 347,713.44 and 156,480.42

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Solution

The fourth proportional to 251,975.78, 347,713.44 and 156,480.42 is: 215,934.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,975.78 : 347,713.44 = 156,480.42 : x
  2. Step 2: Convert to fraction form
    251,975.78/347,713.44 = 156,480.42/x
  3. Step 3: Cross multiply
    251,975.78x = 347,713.44 × 156,480.42
  4. Step 4: Simplify right side
    251,975.78x = 54,410,345,130.84
  5. Step 5: Solve for x
    x = 54,410,345,130.84/251,975.78
  6. Step 6: Final answer
    x = 215,934.83

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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.