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Finding the Fourth Proportional to 547,098.89, 755,122.43 and 320,817.29

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Solution

The fourth proportional to 547,098.89, 755,122.43 and 320,817.29 is: 442,801.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,098.89 : 755,122.43 = 320,817.29 : x
  2. Step 2: Convert to fraction form
    547,098.89/755,122.43 = 320,817.29/x
  3. Step 3: Cross multiply
    547,098.89x = 755,122.43 × 320,817.29
  4. Step 4: Simplify right side
    547,098.89x = 242,256,328,637.25
  5. Step 5: Solve for x
    x = 242,256,328,637.25/547,098.89
  6. Step 6: Final answer
    x = 442,801.72

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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.