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Finding the Fourth Proportional to 547,351.83, 755,338.47 and 305,638.52

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Solution

The fourth proportional to 547,351.83, 755,338.47 and 305,638.52 is: 421,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,351.83 : 755,338.47 = 305,638.52 : x
  2. Step 2: Convert to fraction form
    547,351.83/755,338.47 = 305,638.52/x
  3. Step 3: Cross multiply
    547,351.83x = 755,338.47 × 305,638.52
  4. Step 4: Simplify right side
    547,351.83x = 230,860,527,147.03
  5. Step 5: Solve for x
    x = 230,860,527,147.03/547,351.83
  6. Step 6: Final answer
    x = 421,777.21

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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.