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Finding the Fourth Proportional to 353,129.88, 487,324.54 and 191,984.57

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Solution

The fourth proportional to 353,129.88, 487,324.54 and 191,984.57 is: 264,941.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,129.88 : 487,324.54 = 191,984.57 : x
  2. Step 2: Convert to fraction form
    353,129.88/487,324.54 = 191,984.57/x
  3. Step 3: Cross multiply
    353,129.88x = 487,324.54 × 191,984.57
  4. Step 4: Simplify right side
    353,129.88x = 93,558,789,825.73
  5. Step 5: Solve for x
    x = 93,558,789,825.73/353,129.88
  6. Step 6: Final answer
    x = 264,941.58

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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.