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Finding the Fourth Proportional to 303,414.60, 455,121.90 and 191,440.20

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Solution

The fourth proportional to 303,414.60, 455,121.90 and 191,440.20 is: 287,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,414.60 : 455,121.90 = 191,440.20 : x
  2. Step 2: Convert to fraction form
    303,414.60/455,121.90 = 191,440.20/x
  3. Step 3: Cross multiply
    303,414.60x = 455,121.90 × 191,440.20
  4. Step 4: Simplify right side
    303,414.60x = 87,128,627,560.38
  5. Step 5: Solve for x
    x = 87,128,627,560.38/303,414.60
  6. Step 6: Final answer
    x = 287,160.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.