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Finding the Fourth Proportional to 493,553.26, 681,098.25 and 278,680.60

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Solution

The fourth proportional to 493,553.26, 681,098.25 and 278,680.60 is: 384,576.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,553.26 : 681,098.25 = 278,680.60 : x
  2. Step 2: Convert to fraction form
    493,553.26/681,098.25 = 278,680.60/x
  3. Step 3: Cross multiply
    493,553.26x = 681,098.25 × 278,680.60
  4. Step 4: Simplify right side
    493,553.26x = 189,808,868,968.95
  5. Step 5: Solve for x
    x = 189,808,868,968.95/493,553.26
  6. Step 6: Final answer
    x = 384,576.26

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1.5x scale

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.