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Finding the Fourth Proportional to 547,401.33, 755,370.30 and 305,669.48

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Solution

The fourth proportional to 547,401.33, 755,370.30 and 305,669.48 is: 421,799.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,401.33 : 755,370.30 = 305,669.48 : x
  2. Step 2: Convert to fraction form
    547,401.33/755,370.30 = 305,669.48/x
  3. Step 3: Cross multiply
    547,401.33x = 755,370.30 × 305,669.48
  4. Step 4: Simplify right side
    547,401.33x = 230,893,643,031.59
  5. Step 5: Solve for x
    x = 230,893,643,031.59/547,401.33
  6. Step 6: Final answer
    x = 421,799.57

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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.