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Finding the Fourth Proportional to 373,857.96, 515,917.44 and 212,709.54

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Solution

The fourth proportional to 373,857.96, 515,917.44 and 212,709.54 is: 293,535.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,857.96 : 515,917.44 = 212,709.54 : x
  2. Step 2: Convert to fraction form
    373,857.96/515,917.44 = 212,709.54/x
  3. Step 3: Cross multiply
    373,857.96x = 515,917.44 × 212,709.54
  4. Step 4: Simplify right side
    373,857.96x = 109,740,561,340.38
  5. Step 5: Solve for x
    x = 109,740,561,340.38/373,857.96
  6. Step 6: Final answer
    x = 293,535.44

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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.