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Finding the Fourth Proportional to 268,980.26, 403,523.49 and 79,443.86

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Solution

The fourth proportional to 268,980.26, 403,523.49 and 79,443.86 is: 119,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,980.26 : 403,523.49 = 79,443.86 : x
  2. Step 2: Convert to fraction form
    268,980.26/403,523.49 = 79,443.86/x
  3. Step 3: Cross multiply
    268,980.26x = 403,523.49 × 79,443.86
  4. Step 4: Simplify right side
    268,980.26x = 32,057,463,646.27
  5. Step 5: Solve for x
    x = 32,057,463,646.27/268,980.26
  6. Step 6: Final answer
    x = 119,181.47

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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.