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Finding the Fourth Proportional to 499,399.88, 689,174.72 and 273,045.38

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Solution

The fourth proportional to 499,399.88, 689,174.72 and 273,045.38 is: 376,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,399.88 : 689,174.72 = 273,045.38 : x
  2. Step 2: Convert to fraction form
    499,399.88/689,174.72 = 273,045.38/x
  3. Step 3: Cross multiply
    499,399.88x = 689,174.72 × 273,045.38
  4. Step 4: Simplify right side
    499,399.88x = 188,175,973,308.79
  5. Step 5: Solve for x
    x = 188,175,973,308.79/499,399.88
  6. Step 6: Final answer
    x = 376,804.20

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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.