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Finding the Fourth Proportional to 547,392.54, 755,394.57 and 305,679.36

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Solution

The fourth proportional to 547,392.54, 755,394.57 and 305,679.36 is: 421,833.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,392.54 : 755,394.57 = 305,679.36 : x
  2. Step 2: Convert to fraction form
    547,392.54/755,394.57 = 305,679.36/x
  3. Step 3: Cross multiply
    547,392.54x = 755,394.57 × 305,679.36
  4. Step 4: Simplify right side
    547,392.54x = 230,908,528,705.08
  5. Step 5: Solve for x
    x = 230,908,528,705.08/547,392.54
  6. Step 6: Final answer
    x = 421,833.53

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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.