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Finding the Fourth Proportional to 269,929.92, 404,853.38 and 90,018.50

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Solution

The fourth proportional to 269,929.92, 404,853.38 and 90,018.50 is: 135,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,929.92 : 404,853.38 = 90,018.50 : x
  2. Step 2: Convert to fraction form
    269,929.92/404,853.38 = 90,018.50/x
  3. Step 3: Cross multiply
    269,929.92x = 404,853.38 × 90,018.50
  4. Step 4: Simplify right side
    269,929.92x = 36,444,291,513.17
  5. Step 5: Solve for x
    x = 36,444,291,513.17/269,929.92
  6. Step 6: Final answer
    x = 135,013.90

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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.