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Finding the Fourth Proportional to 443,690.73, 665,703.77 and 266,321.39

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Solution

The fourth proportional to 443,690.73, 665,703.77 and 266,321.39 is: 399,582.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,690.73 : 665,703.77 = 266,321.39 : x
  2. Step 2: Convert to fraction form
    443,690.73/665,703.77 = 266,321.39/x
  3. Step 3: Cross multiply
    443,690.73x = 665,703.77 × 266,321.39
  4. Step 4: Simplify right side
    443,690.73x = 177,291,148,694.52
  5. Step 5: Solve for x
    x = 177,291,148,694.52/443,690.73
  6. Step 6: Final answer
    x = 399,582.72

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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.