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Finding the Fourth Proportional to 358,978.81, 495,394.14 and 197,839.66

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Solution

The fourth proportional to 358,978.81, 495,394.14 and 197,839.66 is: 273,020.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.81 : 495,394.14 = 197,839.66 : x
  2. Step 2: Convert to fraction form
    358,978.81/495,394.14 = 197,839.66/x
  3. Step 3: Cross multiply
    358,978.81x = 495,394.14 × 197,839.66
  4. Step 4: Simplify right side
    358,978.81x = 98,008,608,223.59
  5. Step 5: Solve for x
    x = 98,008,608,223.59/358,978.81
  6. Step 6: Final answer
    x = 273,020.59

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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.