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Finding the Fourth Proportional to 409,906.20, 614,283.30 and 325,810.20

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Solution

The fourth proportional to 409,906.20, 614,283.30 and 325,810.20 is: 488,257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,906.20 : 614,283.30 = 325,810.20 : x
  2. Step 2: Convert to fraction form
    409,906.20/614,283.30 = 325,810.20/x
  3. Step 3: Cross multiply
    409,906.20x = 614,283.30 × 325,810.20
  4. Step 4: Simplify right side
    409,906.20x = 200,139,764,829.66
  5. Step 5: Solve for x
    x = 200,139,764,829.66/409,906.20
  6. Step 6: Final answer
    x = 488,257.47

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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.