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Finding the Fourth Proportional to 491,619.52, 737,429.28 and 281,109.80

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Solution

The fourth proportional to 491,619.52, 737,429.28 and 281,109.80 is: 421,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,619.52 : 737,429.28 = 281,109.80 : x
  2. Step 2: Convert to fraction form
    491,619.52/737,429.28 = 281,109.80/x
  3. Step 3: Cross multiply
    491,619.52x = 737,429.28 × 281,109.80
  4. Step 4: Simplify right side
    491,619.52x = 207,298,597,414.94
  5. Step 5: Solve for x
    x = 207,298,597,414.94/491,619.52
  6. Step 6: Final answer
    x = 421,664.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.