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Finding the Fourth Proportional to 397,099.26, 547,996.32 and 215,810.64

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Solution

The fourth proportional to 397,099.26, 547,996.32 and 215,810.64 is: 297,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,099.26 : 547,996.32 = 215,810.64 : x
  2. Step 2: Convert to fraction form
    397,099.26/547,996.32 = 215,810.64/x
  3. Step 3: Cross multiply
    397,099.26x = 547,996.32 × 215,810.64
  4. Step 4: Simplify right side
    397,099.26x = 118,263,436,536.85
  5. Step 5: Solve for x
    x = 118,263,436,536.85/397,099.26
  6. Step 6: Final answer
    x = 297,818.33

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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.