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Finding the Fourth Proportional to 304,109.20, 455,472.60 and 192,134.80

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Solution

The fourth proportional to 304,109.20, 455,472.60 and 192,134.80 is: 287,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,109.20 : 455,472.60 = 192,134.80 : x
  2. Step 2: Convert to fraction form
    304,109.20/455,472.60 = 192,134.80/x
  3. Step 3: Cross multiply
    304,109.20x = 455,472.60 × 192,134.80
  4. Step 4: Simplify right side
    304,109.20x = 87,512,136,906.48
  5. Step 5: Solve for x
    x = 87,512,136,906.48/304,109.20
  6. Step 6: Final answer
    x = 287,765.50

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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.