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Finding the Fourth Proportional to 323,920.64, 447,021.60 and 187,944.32

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Solution

The fourth proportional to 323,920.64, 447,021.60 and 187,944.32 is: 259,369.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,920.64 : 447,021.60 = 187,944.32 : x
  2. Step 2: Convert to fraction form
    323,920.64/447,021.60 = 187,944.32/x
  3. Step 3: Cross multiply
    323,920.64x = 447,021.60 × 187,944.32
  4. Step 4: Simplify right side
    323,920.64x = 84,015,170,637.31
  5. Step 5: Solve for x
    x = 84,015,170,637.31/323,920.64
  6. Step 6: Final answer
    x = 259,369.61

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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.