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Finding the Fourth Proportional to 246,551.78, 340,238.15 and 137,657.79

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Solution

The fourth proportional to 246,551.78, 340,238.15 and 137,657.79 is: 189,965.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,551.78 : 340,238.15 = 137,657.79 : x
  2. Step 2: Convert to fraction form
    246,551.78/340,238.15 = 137,657.79/x
  3. Step 3: Cross multiply
    246,551.78x = 340,238.15 × 137,657.79
  4. Step 4: Simplify right side
    246,551.78x = 46,836,430,286.53
  5. Step 5: Solve for x
    x = 46,836,430,286.53/246,551.78
  6. Step 6: Final answer
    x = 189,965.90

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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.