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Finding the Fourth Proportional to 499,431.99, 689,205.69 and 273,077.49

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Solution

The fourth proportional to 499,431.99, 689,205.69 and 273,077.49 is: 376,841.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,431.99 : 689,205.69 = 273,077.49 : x
  2. Step 2: Convert to fraction form
    499,431.99/689,205.69 = 273,077.49/x
  3. Step 3: Cross multiply
    499,431.99x = 689,205.69 × 273,077.49
  4. Step 4: Simplify right side
    499,431.99x = 188,206,559,918.92
  5. Step 5: Solve for x
    x = 188,206,559,918.92/499,431.99
  6. Step 6: Final answer
    x = 376,841.22

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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.