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Finding the Fourth Proportional to 358,881.12, 495,212.76 and 205,910.88

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Solution

The fourth proportional to 358,881.12, 495,212.76 and 205,910.88 is: 284,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,881.12 : 495,212.76 = 205,910.88 : x
  2. Step 2: Convert to fraction form
    358,881.12/495,212.76 = 205,910.88/x
  3. Step 3: Cross multiply
    358,881.12x = 495,212.76 × 205,910.88
  4. Step 4: Simplify right side
    358,881.12x = 101,969,695,198.83
  5. Step 5: Solve for x
    x = 101,969,695,198.83/358,881.12
  6. Step 6: Final answer
    x = 284,132.24

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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.