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Finding the Fourth Proportional to 358,756, 495,083.28 and 207,940.48

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Solution

The fourth proportional to 358,756, 495,083.28 and 207,940.48 is: 286,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,756 : 495,083.28 = 207,940.48 : x
  2. Step 2: Convert to fraction form
    358,756/495,083.28 = 207,940.48/x
  3. Step 3: Cross multiply
    358,756x = 495,083.28 × 207,940.48
  4. Step 4: Simplify right side
    358,756x = 102,947,854,883.17
  5. Step 5: Solve for x
    x = 102,947,854,883.17/358,756
  6. Step 6: Final answer
    x = 286,957.86

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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.