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Finding the Fourth Proportional to 548,165.38, 756,473.85 and 306,461.38

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Solution

The fourth proportional to 548,165.38, 756,473.85 and 306,461.38 is: 422,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,165.38 : 756,473.85 = 306,461.38 : x
  2. Step 2: Convert to fraction form
    548,165.38/756,473.85 = 306,461.38/x
  3. Step 3: Cross multiply
    548,165.38x = 756,473.85 × 306,461.38
  4. Step 4: Simplify right side
    548,165.38x = 231,830,020,004.91
  5. Step 5: Solve for x
    x = 231,830,020,004.91/548,165.38
  6. Step 6: Final answer
    x = 422,919.85

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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.