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Finding the Fourth Proportional to 547,103.62, 755,128.95 and 320,822.02

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Solution

The fourth proportional to 547,103.62, 755,128.95 and 320,822.02 is: 442,808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,103.62 : 755,128.95 = 320,822.02 : x
  2. Step 2: Convert to fraction form
    547,103.62/755,128.95 = 320,822.02/x
  3. Step 3: Cross multiply
    547,103.62x = 755,128.95 × 320,822.02
  4. Step 4: Simplify right side
    547,103.62x = 242,261,995,099.48
  5. Step 5: Solve for x
    x = 242,261,995,099.48/547,103.62
  6. Step 6: Final answer
    x = 442,808.25

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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.