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Finding the Fourth Proportional to 547,385.20, 755,392.70 and 305,667.04

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Solution

The fourth proportional to 547,385.20, 755,392.70 and 305,667.04 is: 421,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,385.20 : 755,392.70 = 305,667.04 : x
  2. Step 2: Convert to fraction form
    547,385.20/755,392.70 = 305,667.04/x
  3. Step 3: Cross multiply
    547,385.20x = 755,392.70 × 305,667.04
  4. Step 4: Simplify right side
    547,385.20x = 230,898,650,646.61
  5. Step 5: Solve for x
    x = 230,898,650,646.61/547,385.20
  6. Step 6: Final answer
    x = 421,821.14

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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.