Home / 378,042.21-521,710.07-216,926.73

Finding the Fourth Proportional to 378,042.21, 521,710.07 and 216,926.73

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Solution

The fourth proportional to 378,042.21, 521,710.07 and 216,926.73 is: 299,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,042.21 : 521,710.07 = 216,926.73 : x
  2. Step 2: Convert to fraction form
    378,042.21/521,710.07 = 216,926.73/x
  3. Step 3: Cross multiply
    378,042.21x = 521,710.07 × 216,926.73
  4. Step 4: Simplify right side
    378,042.21x = 113,172,858,408.54
  5. Step 5: Solve for x
    x = 113,172,858,408.54/378,042.21
  6. Step 6: Final answer
    x = 299,365.67

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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.