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Finding the Fourth Proportional to 547,919.65, 756,131.91 and 306,206.26

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Solution

The fourth proportional to 547,919.65, 756,131.91 and 306,206.26 is: 422,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,919.65 : 756,131.91 = 306,206.26 : x
  2. Step 2: Convert to fraction form
    547,919.65/756,131.91 = 306,206.26/x
  3. Step 3: Cross multiply
    547,919.65x = 756,131.91 × 306,206.26
  4. Step 4: Simplify right side
    547,919.65x = 231,532,322,337.43
  5. Step 5: Solve for x
    x = 231,532,322,337.43/547,919.65
  6. Step 6: Final answer
    x = 422,566.20

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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.