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Finding the Fourth Proportional to 451,791.30, 623,476.86 and 247,842.66

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Solution

The fourth proportional to 451,791.30, 623,476.86 and 247,842.66 is: 342,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,791.30 : 623,476.86 = 247,842.66 : x
  2. Step 2: Convert to fraction form
    451,791.30/623,476.86 = 247,842.66/x
  3. Step 3: Cross multiply
    451,791.30x = 623,476.86 × 247,842.66
  4. Step 4: Simplify right side
    451,791.30x = 154,524,163,430.85
  5. Step 5: Solve for x
    x = 154,524,163,430.85/451,791.30
  6. Step 6: Final answer
    x = 342,025.54

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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.