Home / 251,631.92-347,252-138,454.68

Finding the Fourth Proportional to 251,631.92, 347,252 and 138,454.68

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Solution

The fourth proportional to 251,631.92, 347,252 and 138,454.68 is: 191,067.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,631.92 : 347,252 = 138,454.68 : x
  2. Step 2: Convert to fraction form
    251,631.92/347,252 = 138,454.68/x
  3. Step 3: Cross multiply
    251,631.92x = 347,252 × 138,454.68
  4. Step 4: Simplify right side
    251,631.92x = 48,078,664,539.36
  5. Step 5: Solve for x
    x = 48,078,664,539.36/251,631.92
  6. Step 6: Final answer
    x = 191,067.43

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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.