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Finding the Fourth Proportional to 250,431.64, 345,595 and 135,713.48

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Solution

The fourth proportional to 250,431.64, 345,595 and 135,713.48 is: 187,284.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,431.64 : 345,595 = 135,713.48 : x
  2. Step 2: Convert to fraction form
    250,431.64/345,595 = 135,713.48/x
  3. Step 3: Cross multiply
    250,431.64x = 345,595 × 135,713.48
  4. Step 4: Simplify right side
    250,431.64x = 46,901,900,120.60
  5. Step 5: Solve for x
    x = 46,901,900,120.60/250,431.64
  6. Step 6: Final answer
    x = 187,284.24

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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.