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Finding the Fourth Proportional to 548,080, 756,253.60 and 306,285.28

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Solution

The fourth proportional to 548,080, 756,253.60 and 306,285.28 is: 422,619.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,080 : 756,253.60 = 306,285.28 : x
  2. Step 2: Convert to fraction form
    548,080/756,253.60 = 306,285.28/x
  3. Step 3: Cross multiply
    548,080x = 756,253.60 × 306,285.28
  4. Step 4: Simplify right side
    548,080x = 231,629,345,627.01
  5. Step 5: Solve for x
    x = 231,629,345,627.01/548,080
  6. Step 6: Final answer
    x = 422,619.59

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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.