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Finding the Fourth Proportional to 547,940.99, 756,156.03 and 306,223.43

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Solution

The fourth proportional to 547,940.99, 756,156.03 and 306,223.43 is: 422,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,940.99 : 756,156.03 = 306,223.43 : x
  2. Step 2: Convert to fraction form
    547,940.99/756,156.03 = 306,223.43/x
  3. Step 3: Cross multiply
    547,940.99x = 756,156.03 × 306,223.43
  4. Step 4: Simplify right side
    547,940.99x = 231,552,689,341.00
  5. Step 5: Solve for x
    x = 231,552,689,341.00/547,940.99
  6. Step 6: Final answer
    x = 422,586.91

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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.