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Finding the Fourth Proportional to 499,348.26, 689,100.48 and 272,993.76

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Solution

The fourth proportional to 499,348.26, 689,100.48 and 272,993.76 is: 376,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,348.26 : 689,100.48 = 272,993.76 : x
  2. Step 2: Convert to fraction form
    499,348.26/689,100.48 = 272,993.76/x
  3. Step 3: Cross multiply
    499,348.26x = 689,100.48 × 272,993.76
  4. Step 4: Simplify right side
    499,348.26x = 188,120,131,053.01
  5. Step 5: Solve for x
    x = 188,120,131,053.01/499,348.26
  6. Step 6: Final answer
    x = 376,731.32

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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.