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Finding the Fourth Proportional to 343,871.64, 515,136.45 and 225,183.15

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Solution

The fourth proportional to 343,871.64, 515,136.45 and 225,183.15 is: 337,335.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,871.64 : 515,136.45 = 225,183.15 : x
  2. Step 2: Convert to fraction form
    343,871.64/515,136.45 = 225,183.15/x
  3. Step 3: Cross multiply
    343,871.64x = 515,136.45 × 225,183.15
  4. Step 4: Simplify right side
    343,871.64x = 116,000,048,490.82
  5. Step 5: Solve for x
    x = 116,000,048,490.82/343,871.64
  6. Step 6: Final answer
    x = 337,335.32

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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.