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Finding the Fourth Proportional to 547,797.06, 755,945.76 and 306,081.60

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Solution

The fourth proportional to 547,797.06, 755,945.76 and 306,081.60 is: 422,384.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,797.06 : 755,945.76 = 306,081.60 : x
  2. Step 2: Convert to fraction form
    547,797.06/755,945.76 = 306,081.60/x
  3. Step 3: Cross multiply
    547,797.06x = 755,945.76 × 306,081.60
  4. Step 4: Simplify right side
    547,797.06x = 231,381,087,734.02
  5. Step 5: Solve for x
    x = 231,381,087,734.02/547,797.06
  6. Step 6: Final answer
    x = 422,384.68

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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.