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Finding the Fourth Proportional to 358,978.80, 495,390.76 and 197,833.86

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Solution

The fourth proportional to 358,978.80, 495,390.76 and 197,833.86 is: 273,010.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.80 : 495,390.76 = 197,833.86 : x
  2. Step 2: Convert to fraction form
    358,978.80/495,390.76 = 197,833.86/x
  3. Step 3: Cross multiply
    358,978.80x = 495,390.76 × 197,833.86
  4. Step 4: Simplify right side
    358,978.80x = 98,005,065,764.55
  5. Step 5: Solve for x
    x = 98,005,065,764.55/358,978.80
  6. Step 6: Final answer
    x = 273,010.73

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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.