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Finding the Fourth Proportional to 500,249.75, 690,343.91 and 270,805.91

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Solution

The fourth proportional to 500,249.75, 690,343.91 and 270,805.91 is: 373,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,249.75 : 690,343.91 = 270,805.91 : x
  2. Step 2: Convert to fraction form
    500,249.75/690,343.91 = 270,805.91/x
  3. Step 3: Cross multiply
    500,249.75x = 690,343.91 × 270,805.91
  4. Step 4: Simplify right side
    500,249.75x = 186,949,205,954.76
  5. Step 5: Solve for x
    x = 186,949,205,954.76/500,249.75
  6. Step 6: Final answer
    x = 373,711.75

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1.5x scale

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.