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Finding the Fourth Proportional to 547,081.51, 755,098.47 and 320,799.91

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Solution

The fourth proportional to 547,081.51, 755,098.47 and 320,799.91 is: 442,777.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,081.51 : 755,098.47 = 320,799.91 : x
  2. Step 2: Convert to fraction form
    547,081.51/755,098.47 = 320,799.91/x
  3. Step 3: Cross multiply
    547,081.51x = 755,098.47 × 320,799.91
  4. Step 4: Simplify right side
    547,081.51x = 242,235,521,217.14
  5. Step 5: Solve for x
    x = 242,235,521,217.14/547,081.51
  6. Step 6: Final answer
    x = 442,777.75

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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.