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Finding the Fourth Proportional to 547,329.70, 755,308.02 and 305,616.52

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Solution

The fourth proportional to 547,329.70, 755,308.02 and 305,616.52 is: 421,746.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,329.70 : 755,308.02 = 305,616.52 : x
  2. Step 2: Convert to fraction form
    547,329.70/755,308.02 = 305,616.52/x
  3. Step 3: Cross multiply
    547,329.70x = 755,308.02 × 305,616.52
  4. Step 4: Simplify right side
    547,329.70x = 230,834,608,600.49
  5. Step 5: Solve for x
    x = 230,834,608,600.49/547,329.70
  6. Step 6: Final answer
    x = 421,746.91

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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.