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Finding the Fourth Proportional to 304,136.20, 456,204.30 and 82,520.20

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Solution

The fourth proportional to 304,136.20, 456,204.30 and 82,520.20 is: 123,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,136.20 : 456,204.30 = 82,520.20 : x
  2. Step 2: Convert to fraction form
    304,136.20/456,204.30 = 82,520.20/x
  3. Step 3: Cross multiply
    304,136.20x = 456,204.30 × 82,520.20
  4. Step 4: Simplify right side
    304,136.20x = 37,646,070,076.86
  5. Step 5: Solve for x
    x = 37,646,070,076.86/304,136.20
  6. Step 6: Final answer
    x = 123,780.30

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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.