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Finding the Fourth Proportional to 268,899.33, 403,254.90 and 79,309.37

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Solution

The fourth proportional to 268,899.33, 403,254.90 and 79,309.37 is: 118,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,899.33 : 403,254.90 = 79,309.37 : x
  2. Step 2: Convert to fraction form
    268,899.33/403,254.90 = 79,309.37/x
  3. Step 3: Cross multiply
    268,899.33x = 403,254.90 × 79,309.37
  4. Step 4: Simplify right side
    268,899.33x = 31,981,892,068.41
  5. Step 5: Solve for x
    x = 31,981,892,068.41/268,899.33
  6. Step 6: Final answer
    x = 118,936.30

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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.