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Finding the Fourth Proportional to 547,454.97, 755,433.81 and 305,732.30

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Solution

The fourth proportional to 547,454.97, 755,433.81 and 305,732.30 is: 421,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,454.97 : 755,433.81 = 305,732.30 : x
  2. Step 2: Convert to fraction form
    547,454.97/755,433.81 = 305,732.30/x
  3. Step 3: Cross multiply
    547,454.97x = 755,433.81 × 305,732.30
  4. Step 4: Simplify right side
    547,454.97x = 230,960,512,451.89
  5. Step 5: Solve for x
    x = 230,960,512,451.89/547,454.97
  6. Step 6: Final answer
    x = 421,880.38

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1.5x scale

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.