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Finding the Fourth Proportional to 547,855.59, 756,037.02 and 306,138.76

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Solution

The fourth proportional to 547,855.59, 756,037.02 and 306,138.76 is: 422,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,855.59 : 756,037.02 = 306,138.76 : x
  2. Step 2: Convert to fraction form
    547,855.59/756,037.02 = 306,138.76/x
  3. Step 3: Cross multiply
    547,855.59x = 756,037.02 × 306,138.76
  4. Step 4: Simplify right side
    547,855.59x = 231,452,235,816.90
  5. Step 5: Solve for x
    x = 231,452,235,816.90/547,855.59
  6. Step 6: Final answer
    x = 422,469.43

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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.