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Finding the Fourth Proportional to 312,118.20, 467,521.20 and 259,630.20

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Solution

The fourth proportional to 312,118.20, 467,521.20 and 259,630.20 is: 388,899.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,118.20 : 467,521.20 = 259,630.20 : x
  2. Step 2: Convert to fraction form
    312,118.20/467,521.20 = 259,630.20/x
  3. Step 3: Cross multiply
    312,118.20x = 467,521.20 × 259,630.20
  4. Step 4: Simplify right side
    312,118.20x = 121,382,622,660.24
  5. Step 5: Solve for x
    x = 121,382,622,660.24/312,118.20
  6. Step 6: Final answer
    x = 388,899.53

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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.