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Finding the Fourth Proportional to 253,396.42, 349,690.17 and 140,229.70

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Solution

The fourth proportional to 253,396.42, 349,690.17 and 140,229.70 is: 193,518.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,396.42 : 349,690.17 = 140,229.70 : x
  2. Step 2: Convert to fraction form
    253,396.42/349,690.17 = 140,229.70/x
  3. Step 3: Cross multiply
    253,396.42x = 349,690.17 × 140,229.70
  4. Step 4: Simplify right side
    253,396.42x = 49,036,947,632.05
  5. Step 5: Solve for x
    x = 49,036,947,632.05/253,396.42
  6. Step 6: Final answer
    x = 193,518.71

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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.