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Finding the Fourth Proportional to 382,622.32, 528,016.32 and 210,550.78

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Solution

The fourth proportional to 382,622.32, 528,016.32 and 210,550.78 is: 290,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,622.32 : 528,016.32 = 210,550.78 : x
  2. Step 2: Convert to fraction form
    382,622.32/528,016.32 = 210,550.78/x
  3. Step 3: Cross multiply
    382,622.32x = 528,016.32 × 210,550.78
  4. Step 4: Simplify right side
    382,622.32x = 111,174,248,028.73
  5. Step 5: Solve for x
    x = 111,174,248,028.73/382,622.32
  6. Step 6: Final answer
    x = 290,558.71

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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.