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Finding the Fourth Proportional to 547,449.07, 755,370.14 and 305,694.45

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Solution

The fourth proportional to 547,449.07, 755,370.14 and 305,694.45 is: 421,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,449.07 : 755,370.14 = 305,694.45 : x
  2. Step 2: Convert to fraction form
    547,449.07/755,370.14 = 305,694.45/x
  3. Step 3: Cross multiply
    547,449.07x = 755,370.14 × 305,694.45
  4. Step 4: Simplify right side
    547,449.07x = 230,912,459,493.72
  5. Step 5: Solve for x
    x = 230,912,459,493.72/547,449.07
  6. Step 6: Final answer
    x = 421,797.15

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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.