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Finding the Fourth Proportional to 547,093.82, 755,115.45 and 320,812.22

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Solution

The fourth proportional to 547,093.82, 755,115.45 and 320,812.22 is: 442,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,093.82 : 755,115.45 = 320,812.22 : x
  2. Step 2: Convert to fraction form
    547,093.82/755,115.45 = 320,812.22/x
  3. Step 3: Cross multiply
    547,093.82x = 755,115.45 × 320,812.22
  4. Step 4: Simplify right side
    547,093.82x = 242,250,263,870.80
  5. Step 5: Solve for x
    x = 242,250,263,870.80/547,093.82
  6. Step 6: Final answer
    x = 442,794.74

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1.5x scale

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.