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Finding the Fourth Proportional to 250,259, 345,357.60 and 137,082.20

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Solution

The fourth proportional to 250,259, 345,357.60 and 137,082.20 is: 189,173.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,259 : 345,357.60 = 137,082.20 : x
  2. Step 2: Convert to fraction form
    250,259/345,357.60 = 137,082.20/x
  3. Step 3: Cross multiply
    250,259x = 345,357.60 × 137,082.20
  4. Step 4: Simplify right side
    250,259x = 47,342,379,594.72
  5. Step 5: Solve for x
    x = 47,342,379,594.72/250,259
  6. Step 6: Final answer
    x = 189,173.53

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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.