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Finding the Fourth Proportional to 251,896.73, 347,601.62 and 138,719.48

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Solution

The fourth proportional to 251,896.73, 347,601.62 and 138,719.48 is: 191,424.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,896.73 : 347,601.62 = 138,719.48 : x
  2. Step 2: Convert to fraction form
    251,896.73/347,601.62 = 138,719.48/x
  3. Step 3: Cross multiply
    251,896.73x = 347,601.62 × 138,719.48
  4. Step 4: Simplify right side
    251,896.73x = 48,219,113,541.95
  5. Step 5: Solve for x
    x = 48,219,113,541.95/251,896.73
  6. Step 6: Final answer
    x = 191,424.14

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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.