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Finding the Fourth Proportional to 640,722.15, 961,010.33 and 167,455.35

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Solution

The fourth proportional to 640,722.15, 961,010.33 and 167,455.35 is: 251,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,722.15 : 961,010.33 = 167,455.35 : x
  2. Step 2: Convert to fraction form
    640,722.15/961,010.33 = 167,455.35/x
  3. Step 3: Cross multiply
    640,722.15x = 961,010.33 × 167,455.35
  4. Step 4: Simplify right side
    640,722.15x = 160,926,320,326.49
  5. Step 5: Solve for x
    x = 160,926,320,326.49/640,722.15
  6. Step 6: Final answer
    x = 251,163.97

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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.