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Finding the Fourth Proportional to 358,973.87, 495,385.89 and 205,999.88

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Solution

The fourth proportional to 358,973.87, 495,385.89 and 205,999.88 is: 284,280.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,973.87 : 495,385.89 = 205,999.88 : x
  2. Step 2: Convert to fraction form
    358,973.87/495,385.89 = 205,999.88/x
  3. Step 3: Cross multiply
    358,973.87x = 495,385.89 × 205,999.88
  4. Step 4: Simplify right side
    358,973.87x = 102,049,433,893.69
  5. Step 5: Solve for x
    x = 102,049,433,893.69/358,973.87
  6. Step 6: Final answer
    x = 284,280.95

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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.