Home / 378,181.28-521,880.55-206,103.67

Finding the Fourth Proportional to 378,181.28, 521,880.55 and 206,103.67

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Solution

The fourth proportional to 378,181.28, 521,880.55 and 206,103.67 is: 284,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,181.28 : 521,880.55 = 206,103.67 : x
  2. Step 2: Convert to fraction form
    378,181.28/521,880.55 = 206,103.67/x
  3. Step 3: Cross multiply
    378,181.28x = 521,880.55 × 206,103.67
  4. Step 4: Simplify right side
    378,181.28x = 107,561,496,656.62
  5. Step 5: Solve for x
    x = 107,561,496,656.62/378,181.28
  6. Step 6: Final answer
    x = 284,417.82

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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.