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Finding the Fourth Proportional to 500,851.35, 691,170.98 and 274,496.31

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Solution

The fourth proportional to 500,851.35, 691,170.98 and 274,496.31 is: 378,802.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,851.35 : 691,170.98 = 274,496.31 : x
  2. Step 2: Convert to fraction form
    500,851.35/691,170.98 = 274,496.31/x
  3. Step 3: Cross multiply
    500,851.35x = 691,170.98 × 274,496.31
  4. Step 4: Simplify right side
    500,851.35x = 189,723,882,216.60
  5. Step 5: Solve for x
    x = 189,723,882,216.60/500,851.35
  6. Step 6: Final answer
    x = 378,802.78

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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.