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Finding the Fourth Proportional to 322,832.64, 445,243.74 and 286,560.57

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Solution

The fourth proportional to 322,832.64, 445,243.74 and 286,560.57 is: 395,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,832.64 : 445,243.74 = 286,560.57 : x
  2. Step 2: Convert to fraction form
    322,832.64/445,243.74 = 286,560.57/x
  3. Step 3: Cross multiply
    322,832.64x = 445,243.74 × 286,560.57
  4. Step 4: Simplify right side
    322,832.64x = 127,589,299,923.33
  5. Step 5: Solve for x
    x = 127,589,299,923.33/322,832.64
  6. Step 6: Final answer
    x = 395,218.09

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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.