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Finding the Fourth Proportional to 547,385.79, 755,385.26 and 305,672.61

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Solution

The fourth proportional to 547,385.79, 755,385.26 and 305,672.61 is: 421,824.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,385.79 : 755,385.26 = 305,672.61 : x
  2. Step 2: Convert to fraction form
    547,385.79/755,385.26 = 305,672.61/x
  3. Step 3: Cross multiply
    547,385.79x = 755,385.26 × 305,672.61
  4. Step 4: Simplify right side
    547,385.79x = 230,900,582,451.37
  5. Step 5: Solve for x
    x = 230,900,582,451.37/547,385.79
  6. Step 6: Final answer
    x = 421,824.22

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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.