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Finding the Fourth Proportional to 266,578.50, 399,867.75 and 89,085.51

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Solution

The fourth proportional to 266,578.50, 399,867.75 and 89,085.51 is: 133,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,578.50 : 399,867.75 = 89,085.51 : x
  2. Step 2: Convert to fraction form
    266,578.50/399,867.75 = 89,085.51/x
  3. Step 3: Cross multiply
    266,578.50x = 399,867.75 × 89,085.51
  4. Step 4: Simplify right side
    266,578.50x = 35,622,421,218.92
  5. Step 5: Solve for x
    x = 35,622,421,218.92/266,578.50
  6. Step 6: Final answer
    x = 133,628.26

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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.