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Finding the Fourth Proportional to 322,168.05, 483,215.04 and 85,529.25

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Solution

The fourth proportional to 322,168.05, 483,215.04 and 85,529.25 is: 128,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,168.05 : 483,215.04 = 85,529.25 : x
  2. Step 2: Convert to fraction form
    322,168.05/483,215.04 = 85,529.25/x
  3. Step 3: Cross multiply
    322,168.05x = 483,215.04 × 85,529.25
  4. Step 4: Simplify right side
    322,168.05x = 41,329,019,959.92
  5. Step 5: Solve for x
    x = 41,329,019,959.92/322,168.05
  6. Step 6: Final answer
    x = 128,284.04

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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.