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Finding the Fourth Proportional to 343,739, 515,587.78 and 204,384.44

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Solution

The fourth proportional to 343,739, 515,587.78 and 204,384.44 is: 306,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,739 : 515,587.78 = 204,384.44 : x
  2. Step 2: Convert to fraction form
    343,739/515,587.78 = 204,384.44/x
  3. Step 3: Cross multiply
    343,739x = 515,587.78 × 204,384.44
  4. Step 4: Simplify right side
    343,739x = 105,378,119,686.14
  5. Step 5: Solve for x
    x = 105,378,119,686.14/343,739
  6. Step 6: Final answer
    x = 306,564.34

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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.