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Finding the Fourth Proportional to 358,978.69, 495,393.97 and 197,839.54

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Solution

The fourth proportional to 358,978.69, 495,393.97 and 197,839.54 is: 273,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.69 : 495,393.97 = 197,839.54 : x
  2. Step 2: Convert to fraction form
    358,978.69/495,393.97 = 197,839.54/x
  3. Step 3: Cross multiply
    358,978.69x = 495,393.97 × 197,839.54
  4. Step 4: Simplify right side
    358,978.69x = 98,008,512,666.60
  5. Step 5: Solve for x
    x = 98,008,512,666.60/358,978.69
  6. Step 6: Final answer
    x = 273,020.42

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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.