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Finding the Fourth Proportional to 303,122.32, 418,135.20 and 189,748.24

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Solution

The fourth proportional to 303,122.32, 418,135.20 and 189,748.24 is: 261,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,122.32 : 418,135.20 = 189,748.24 : x
  2. Step 2: Convert to fraction form
    303,122.32/418,135.20 = 189,748.24/x
  3. Step 3: Cross multiply
    303,122.32x = 418,135.20 × 189,748.24
  4. Step 4: Simplify right side
    303,122.32x = 79,340,418,282.05
  5. Step 5: Solve for x
    x = 79,340,418,282.05/303,122.32
  6. Step 6: Final answer
    x = 261,743.90

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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.