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Finding the Fourth Proportional to 269,887, 404,828.68 and 89,986.20

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Solution

The fourth proportional to 269,887, 404,828.68 and 89,986.20 is: 134,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,887 : 404,828.68 = 89,986.20 : x
  2. Step 2: Convert to fraction form
    269,887/404,828.68 = 89,986.20/x
  3. Step 3: Cross multiply
    269,887x = 404,828.68 × 89,986.20
  4. Step 4: Simplify right side
    269,887x = 36,428,994,564.22
  5. Step 5: Solve for x
    x = 36,428,994,564.22/269,887
  6. Step 6: Final answer
    x = 134,978.69

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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.