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Finding the Fourth Proportional to 353,253.81, 487,487.86 and 192,108.43

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Solution

The fourth proportional to 353,253.81, 487,487.86 and 192,108.43 is: 265,108.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,253.81 : 487,487.86 = 192,108.43 : x
  2. Step 2: Convert to fraction form
    353,253.81/487,487.86 = 192,108.43/x
  3. Step 3: Cross multiply
    353,253.81x = 487,487.86 × 192,108.43
  4. Step 4: Simplify right side
    353,253.81x = 93,650,527,428.66
  5. Step 5: Solve for x
    x = 93,650,527,428.66/353,253.81
  6. Step 6: Final answer
    x = 265,108.33

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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.