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Finding the Fourth Proportional to 547,878.62, 756,071.25 and 306,161.21

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Solution

The fourth proportional to 547,878.62, 756,071.25 and 306,161.21 is: 422,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,878.62 : 756,071.25 = 306,161.21 : x
  2. Step 2: Convert to fraction form
    547,878.62/756,071.25 = 306,161.21/x
  3. Step 3: Cross multiply
    547,878.62x = 756,071.25 × 306,161.21
  4. Step 4: Simplify right side
    547,878.62x = 231,479,684,965.86
  5. Step 5: Solve for x
    x = 231,479,684,965.86/547,878.62
  6. Step 6: Final answer
    x = 422,501.77

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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.