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Finding the Fourth Proportional to 547,989.12, 756,194.64 and 306,223.56

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Solution

The fourth proportional to 547,989.12, 756,194.64 and 306,223.56 is: 422,571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,989.12 : 756,194.64 = 306,223.56 : x
  2. Step 2: Convert to fraction form
    547,989.12/756,194.64 = 306,223.56/x
  3. Step 3: Cross multiply
    547,989.12x = 756,194.64 × 306,223.56
  4. Step 4: Simplify right side
    547,989.12x = 231,564,614,713.72
  5. Step 5: Solve for x
    x = 231,564,614,713.72/547,989.12
  6. Step 6: Final answer
    x = 422,571.56

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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.