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Finding the Fourth Proportional to 479,136.73, 661,206 and 264,276.31

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Solution

The fourth proportional to 479,136.73, 661,206 and 264,276.31 is: 364,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,136.73 : 661,206 = 264,276.31 : x
  2. Step 2: Convert to fraction form
    479,136.73/661,206 = 264,276.31/x
  3. Step 3: Cross multiply
    479,136.73x = 661,206 × 264,276.31
  4. Step 4: Simplify right side
    479,136.73x = 174,741,081,829.86
  5. Step 5: Solve for x
    x = 174,741,081,829.86/479,136.73
  6. Step 6: Final answer
    x = 364,699.83

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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.