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Finding the Fourth Proportional to 250,034.64, 345,039.18 and 142,639.44

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Solution

The fourth proportional to 250,034.64, 345,039.18 and 142,639.44 is: 196,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,034.64 : 345,039.18 = 142,639.44 : x
  2. Step 2: Convert to fraction form
    250,034.64/345,039.18 = 142,639.44/x
  3. Step 3: Cross multiply
    250,034.64x = 345,039.18 × 142,639.44
  4. Step 4: Simplify right side
    250,034.64x = 49,216,195,413.26
  5. Step 5: Solve for x
    x = 49,216,195,413.26/250,034.64
  6. Step 6: Final answer
    x = 196,837.51

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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.