Home / 451,742.43-677,173-215,021.55

Finding the Fourth Proportional to 451,742.43, 677,173 and 215,021.55

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Solution

The fourth proportional to 451,742.43, 677,173 and 215,021.55 is: 322,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,742.43 : 677,173 = 215,021.55 : x
  2. Step 2: Convert to fraction form
    451,742.43/677,173 = 215,021.55/x
  3. Step 3: Cross multiply
    451,742.43x = 677,173 × 215,021.55
  4. Step 4: Simplify right side
    451,742.43x = 145,606,788,078.15
  5. Step 5: Solve for x
    x = 145,606,788,078.15/451,742.43
  6. Step 6: Final answer
    x = 322,322.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.