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Finding the Fourth Proportional to 547,158.50, 755,047.41 and 305,456.39

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Solution

The fourth proportional to 547,158.50, 755,047.41 and 305,456.39 is: 421,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,158.50 : 755,047.41 = 305,456.39 : x
  2. Step 2: Convert to fraction form
    547,158.50/755,047.41 = 305,456.39/x
  3. Step 3: Cross multiply
    547,158.50x = 755,047.41 × 305,456.39
  4. Step 4: Simplify right side
    547,158.50x = 230,634,056,137.45
  5. Step 5: Solve for x
    x = 230,634,056,137.45/547,158.50
  6. Step 6: Final answer
    x = 421,512.33

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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.