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Finding the Fourth Proportional to 499,355.28, 689,157.72 and 273,034.80

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Solution

The fourth proportional to 499,355.28, 689,157.72 and 273,034.80 is: 376,813.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,355.28 : 689,157.72 = 273,034.80 : x
  2. Step 2: Convert to fraction form
    499,355.28/689,157.72 = 273,034.80/x
  3. Step 3: Cross multiply
    499,355.28x = 689,157.72 × 273,034.80
  4. Step 4: Simplify right side
    499,355.28x = 188,164,040,248.66
  5. Step 5: Solve for x
    x = 188,164,040,248.66/499,355.28
  6. Step 6: Final answer
    x = 376,813.96

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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.