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Finding the Fourth Proportional to 378,068.55, 566,512.22 and 321,676.76

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Solution

The fourth proportional to 378,068.55, 566,512.22 and 321,676.76 is: 482,012.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,068.55 : 566,512.22 = 321,676.76 : x
  2. Step 2: Convert to fraction form
    378,068.55/566,512.22 = 321,676.76/x
  3. Step 3: Cross multiply
    378,068.55x = 566,512.22 × 321,676.76
  4. Step 4: Simplify right side
    378,068.55x = 182,233,810,989.06
  5. Step 5: Solve for x
    x = 182,233,810,989.06/378,068.55
  6. Step 6: Final answer
    x = 482,012.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.