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Finding the Fourth Proportional to 343,870.28, 515,134.40 and 225,181.79

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Solution

The fourth proportional to 343,870.28, 515,134.40 and 225,181.79 is: 337,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,870.28 : 515,134.40 = 225,181.79 : x
  2. Step 2: Convert to fraction form
    343,870.28/515,134.40 = 225,181.79/x
  3. Step 3: Cross multiply
    343,870.28x = 515,134.40 × 225,181.79
  4. Step 4: Simplify right side
    343,870.28x = 115,998,884,512.75
  5. Step 5: Solve for x
    x = 115,998,884,512.75/343,870.28
  6. Step 6: Final answer
    x = 337,333.27

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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.