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Finding the Fourth Proportional to 409,855.60, 614,127.30 and 269,450.20

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Solution

The fourth proportional to 409,855.60, 614,127.30 and 269,450.20 is: 403,743.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,855.60 : 614,127.30 = 269,450.20 : x
  2. Step 2: Convert to fraction form
    409,855.60/614,127.30 = 269,450.20/x
  3. Step 3: Cross multiply
    409,855.60x = 614,127.30 × 269,450.20
  4. Step 4: Simplify right side
    409,855.60x = 165,476,723,810.46
  5. Step 5: Solve for x
    x = 165,476,723,810.46/409,855.60
  6. Step 6: Final answer
    x = 403,743.96

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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.