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Finding the Fourth Proportional to 250,427.64, 345,589.48 and 135,709.48

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Solution

The fourth proportional to 250,427.64, 345,589.48 and 135,709.48 is: 187,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,427.64 : 345,589.48 = 135,709.48 : x
  2. Step 2: Convert to fraction form
    250,427.64/345,589.48 = 135,709.48/x
  3. Step 3: Cross multiply
    250,427.64x = 345,589.48 × 135,709.48
  4. Step 4: Simplify right side
    250,427.64x = 46,899,768,624.27
  5. Step 5: Solve for x
    x = 46,899,768,624.27/250,427.64
  6. Step 6: Final answer
    x = 187,278.72

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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.