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Finding the Fourth Proportional to 409,816.20, 614,724.30 and 251,531.40

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Solution

The fourth proportional to 409,816.20, 614,724.30 and 251,531.40 is: 377,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,816.20 : 614,724.30 = 251,531.40 : x
  2. Step 2: Convert to fraction form
    409,816.20/614,724.30 = 251,531.40/x
  3. Step 3: Cross multiply
    409,816.20x = 614,724.30 × 251,531.40
  4. Step 4: Simplify right side
    409,816.20x = 154,622,463,793.02
  5. Step 5: Solve for x
    x = 154,622,463,793.02/409,816.20
  6. Step 6: Final answer
    x = 377,297.10

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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.