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Finding the Fourth Proportional to 547,448.57, 755,369.45 and 305,693.95

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Solution

The fourth proportional to 547,448.57, 755,369.45 and 305,693.95 is: 421,796.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,448.57 : 755,369.45 = 305,693.95 : x
  2. Step 2: Convert to fraction form
    547,448.57/755,369.45 = 305,693.95/x
  3. Step 3: Cross multiply
    547,448.57x = 755,369.45 × 305,693.95
  4. Step 4: Simplify right side
    547,448.57x = 230,911,867,102.98
  5. Step 5: Solve for x
    x = 230,911,867,102.98/547,448.57
  6. Step 6: Final answer
    x = 421,796.46

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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.