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Finding the Fourth Proportional to 353,187.69, 487,395.47 and 192,042.78

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Solution

The fourth proportional to 353,187.69, 487,395.47 and 192,042.78 is: 265,017.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,187.69 : 487,395.47 = 192,042.78 : x
  2. Step 2: Convert to fraction form
    353,187.69/487,395.47 = 192,042.78/x
  3. Step 3: Cross multiply
    353,187.69x = 487,395.47 × 192,042.78
  4. Step 4: Simplify right side
    353,187.69x = 93,600,780,057.99
  5. Step 5: Solve for x
    x = 93,600,780,057.99/353,187.69
  6. Step 6: Final answer
    x = 265,017.11

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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.