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Finding the Fourth Proportional to 250,172.88, 345,238.60 and 137,002.64

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Solution

The fourth proportional to 250,172.88, 345,238.60 and 137,002.64 is: 189,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,172.88 : 345,238.60 = 137,002.64 : x
  2. Step 2: Convert to fraction form
    250,172.88/345,238.60 = 137,002.64/x
  3. Step 3: Cross multiply
    250,172.88x = 345,238.60 × 137,002.64
  4. Step 4: Simplify right side
    250,172.88x = 47,298,599,629.90
  5. Step 5: Solve for x
    x = 47,298,599,629.90/250,172.88
  6. Step 6: Final answer
    x = 189,063.66

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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.