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Finding the Fourth Proportional to 547,773.12, 755,857.44 and 321,336

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Solution

The fourth proportional to 547,773.12, 755,857.44 and 321,336 is: 443,402.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,773.12 : 755,857.44 = 321,336 : x
  2. Step 2: Convert to fraction form
    547,773.12/755,857.44 = 321,336/x
  3. Step 3: Cross multiply
    547,773.12x = 755,857.44 × 321,336
  4. Step 4: Simplify right side
    547,773.12x = 242,884,206,339.84
  5. Step 5: Solve for x
    x = 242,884,206,339.84/547,773.12
  6. Step 6: Final answer
    x = 443,402.93

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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.