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Finding the Fourth Proportional to 547,380.99, 755,386.83 and 305,662.82

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Solution

The fourth proportional to 547,380.99, 755,386.83 and 305,662.82 is: 421,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,380.99 : 755,386.83 = 305,662.82 : x
  2. Step 2: Convert to fraction form
    547,380.99/755,386.83 = 305,662.82/x
  3. Step 3: Cross multiply
    547,380.99x = 755,386.83 × 305,662.82
  4. Step 4: Simplify right side
    547,380.99x = 230,893,664,871.73
  5. Step 5: Solve for x
    x = 230,893,664,871.73/547,380.99
  6. Step 6: Final answer
    x = 421,815.28

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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.