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Finding the Fourth Proportional to 250,651.44, 345,907.80 and 137,474.64

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Solution

The fourth proportional to 250,651.44, 345,907.80 and 137,474.64 is: 189,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,651.44 : 345,907.80 = 137,474.64 : x
  2. Step 2: Convert to fraction form
    250,651.44/345,907.80 = 137,474.64/x
  3. Step 3: Cross multiply
    250,651.44x = 345,907.80 × 137,474.64
  4. Step 4: Simplify right side
    250,651.44x = 47,553,550,278.19
  5. Step 5: Solve for x
    x = 47,553,550,278.19/250,651.44
  6. Step 6: Final answer
    x = 189,719.84

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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.