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Finding the Fourth Proportional to 547,189.44, 755,159.52 and 305,519.52

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Solution

The fourth proportional to 547,189.44, 755,159.52 and 305,519.52 is: 421,638.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,189.44 : 755,159.52 = 305,519.52 : x
  2. Step 2: Convert to fraction form
    547,189.44/755,159.52 = 305,519.52/x
  3. Step 3: Cross multiply
    547,189.44x = 755,159.52 × 305,519.52
  4. Step 4: Simplify right side
    547,189.44x = 230,715,974,073.83
  5. Step 5: Solve for x
    x = 230,715,974,073.83/547,189.44
  6. Step 6: Final answer
    x = 421,638.21

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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.