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Finding the Fourth Proportional to 273,044.40, 409,477.46 and 90,626.20

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Solution

The fourth proportional to 273,044.40, 409,477.46 and 90,626.20 is: 135,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,044.40 : 409,477.46 = 90,626.20 : x
  2. Step 2: Convert to fraction form
    273,044.40/409,477.46 = 90,626.20/x
  3. Step 3: Cross multiply
    273,044.40x = 409,477.46 × 90,626.20
  4. Step 4: Simplify right side
    273,044.40x = 37,109,386,185.45
  5. Step 5: Solve for x
    x = 37,109,386,185.45/273,044.40
  6. Step 6: Final answer
    x = 135,909.71

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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.