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Finding the Fourth Proportional to 330,508.80, 455,961.60 and 203,143.68

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Solution

The fourth proportional to 330,508.80, 455,961.60 and 203,143.68 is: 280,251.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,508.80 : 455,961.60 = 203,143.68 : x
  2. Step 2: Convert to fraction form
    330,508.80/455,961.60 = 203,143.68/x
  3. Step 3: Cross multiply
    330,508.80x = 455,961.60 × 203,143.68
  4. Step 4: Simplify right side
    330,508.80x = 92,625,717,362.69
  5. Step 5: Solve for x
    x = 92,625,717,362.69/330,508.80
  6. Step 6: Final answer
    x = 280,251.89

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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.