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Finding the Fourth Proportional to 303,896.20, 455,188.20 and 251,408.20

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Solution

The fourth proportional to 303,896.20, 455,188.20 and 251,408.20 is: 376,569.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,896.20 : 455,188.20 = 251,408.20 : x
  2. Step 2: Convert to fraction form
    303,896.20/455,188.20 = 251,408.20/x
  3. Step 3: Cross multiply
    303,896.20x = 455,188.20 × 251,408.20
  4. Step 4: Simplify right side
    303,896.20x = 114,438,046,023.24
  5. Step 5: Solve for x
    x = 114,438,046,023.24/303,896.20
  6. Step 6: Final answer
    x = 376,569.52

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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.