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Finding the Fourth Proportional to 388,045.20, 582,067.80 and 328,996.20

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Solution

The fourth proportional to 388,045.20, 582,067.80 and 328,996.20 is: 493,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,045.20 : 582,067.80 = 328,996.20 : x
  2. Step 2: Convert to fraction form
    388,045.20/582,067.80 = 328,996.20/x
  3. Step 3: Cross multiply
    388,045.20x = 582,067.80 × 328,996.20
  4. Step 4: Simplify right side
    388,045.20x = 191,498,094,342.36
  5. Step 5: Solve for x
    x = 191,498,094,342.36/388,045.20
  6. Step 6: Final answer
    x = 493,494.30

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Similar ratio
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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.