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Finding the Fourth Proportional to 279,693.52, 386,004.95 and 170,791.86

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Solution

The fourth proportional to 279,693.52, 386,004.95 and 170,791.86 is: 235,709.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,693.52 : 386,004.95 = 170,791.86 : x
  2. Step 2: Convert to fraction form
    279,693.52/386,004.95 = 170,791.86/x
  3. Step 3: Cross multiply
    279,693.52x = 386,004.95 × 170,791.86
  4. Step 4: Simplify right side
    279,693.52x = 65,926,503,379.71
  5. Step 5: Solve for x
    x = 65,926,503,379.71/279,693.52
  6. Step 6: Final answer
    x = 235,709.80

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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.