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Finding the Fourth Proportional to 397,097.32, 547,997.22 and 215,809.96

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Solution

The fourth proportional to 397,097.32, 547,997.22 and 215,809.96 is: 297,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,097.32 : 547,997.22 = 215,809.96 : x
  2. Step 2: Convert to fraction form
    397,097.32/547,997.22 = 215,809.96/x
  3. Step 3: Cross multiply
    397,097.32x = 547,997.22 × 215,809.96
  4. Step 4: Simplify right side
    397,097.32x = 118,263,258,128.31
  5. Step 5: Solve for x
    x = 118,263,258,128.31/397,097.32
  6. Step 6: Final answer
    x = 297,819.33

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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.