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Finding the Fourth Proportional to 640,679.34, 961,028.34 and 167,364.75

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Solution

The fourth proportional to 640,679.34, 961,028.34 and 167,364.75 is: 251,049.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,679.34 : 961,028.34 = 167,364.75 : x
  2. Step 2: Convert to fraction form
    640,679.34/961,028.34 = 167,364.75/x
  3. Step 3: Cross multiply
    640,679.34x = 961,028.34 × 167,364.75
  4. Step 4: Simplify right side
    640,679.34x = 160,842,267,867.02
  5. Step 5: Solve for x
    x = 160,842,267,867.02/640,679.34
  6. Step 6: Final answer
    x = 251,049.56

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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.