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Finding the Fourth Proportional to 500,868.88, 691,167.72 and 274,498.32

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Solution

The fourth proportional to 500,868.88, 691,167.72 and 274,498.32 is: 378,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,868.88 : 691,167.72 = 274,498.32 : x
  2. Step 2: Convert to fraction form
    500,868.88/691,167.72 = 274,498.32/x
  3. Step 3: Cross multiply
    500,868.88x = 691,167.72 × 274,498.32
  4. Step 4: Simplify right side
    500,868.88x = 189,724,377,978.23
  5. Step 5: Solve for x
    x = 189,724,377,978.23/500,868.88
  6. Step 6: Final answer
    x = 378,790.51

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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.