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Finding the Fourth Proportional to 522,593.64, 721,309.86 and 321,273

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Solution

The fourth proportional to 522,593.64, 721,309.86 and 321,273 is: 443,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,593.64 : 721,309.86 = 321,273 : x
  2. Step 2: Convert to fraction form
    522,593.64/721,309.86 = 321,273/x
  3. Step 3: Cross multiply
    522,593.64x = 721,309.86 × 321,273
  4. Step 4: Simplify right side
    522,593.64x = 231,737,382,651.78
  5. Step 5: Solve for x
    x = 231,737,382,651.78/522,593.64
  6. Step 6: Final answer
    x = 443,437.05

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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.