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Finding the Fourth Proportional to 250,697, 345,961.86 and 137,520.02

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Solution

The fourth proportional to 250,697, 345,961.86 and 137,520.02 is: 189,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,697 : 345,961.86 = 137,520.02 : x
  2. Step 2: Convert to fraction form
    250,697/345,961.86 = 137,520.02/x
  3. Step 3: Cross multiply
    250,697x = 345,961.86 × 137,520.02
  4. Step 4: Simplify right side
    250,697x = 47,576,681,906.44
  5. Step 5: Solve for x
    x = 47,576,681,906.44/250,697
  6. Step 6: Final answer
    x = 189,777.63

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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.