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Finding the Fourth Proportional to 353,059.34, 487,292.76 and 209,791.67

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Solution

The fourth proportional to 353,059.34, 487,292.76 and 209,791.67 is: 289,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,059.34 : 487,292.76 = 209,791.67 : x
  2. Step 2: Convert to fraction form
    353,059.34/487,292.76 = 209,791.67/x
  3. Step 3: Cross multiply
    353,059.34x = 487,292.76 × 209,791.67
  4. Step 4: Simplify right side
    353,059.34x = 102,229,959,462.85
  5. Step 5: Solve for x
    x = 102,229,959,462.85/353,059.34
  6. Step 6: Final answer
    x = 289,554.61

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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.