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Finding the Fourth Proportional to 251,857.52, 347,485.16 and 142,944.08

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Solution

The fourth proportional to 251,857.52, 347,485.16 and 142,944.08 is: 197,218.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,857.52 : 347,485.16 = 142,944.08 : x
  2. Step 2: Convert to fraction form
    251,857.52/347,485.16 = 142,944.08/x
  3. Step 3: Cross multiply
    251,857.52x = 347,485.16 × 142,944.08
  4. Step 4: Simplify right side
    251,857.52x = 49,670,946,509.85
  5. Step 5: Solve for x
    x = 49,670,946,509.85/251,857.52
  6. Step 6: Final answer
    x = 197,218.44

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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.