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Finding the Fourth Proportional to 499,397.88, 689,171.96 and 273,043.38

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Solution

The fourth proportional to 499,397.88, 689,171.96 and 273,043.38 is: 376,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,397.88 : 689,171.96 = 273,043.38 : x
  2. Step 2: Convert to fraction form
    499,397.88/689,171.96 = 273,043.38/x
  3. Step 3: Cross multiply
    499,397.88x = 689,171.96 × 273,043.38
  4. Step 4: Simplify right side
    499,397.88x = 188,173,841,359.63
  5. Step 5: Solve for x
    x = 188,173,841,359.63/499,397.88
  6. Step 6: Final answer
    x = 376,801.44

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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.