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Finding the Fourth Proportional to 344,128.72, 515,362.48 and 206,957.35

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Solution

The fourth proportional to 344,128.72, 515,362.48 and 206,957.35 is: 309,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,128.72 : 515,362.48 = 206,957.35 : x
  2. Step 2: Convert to fraction form
    344,128.72/515,362.48 = 206,957.35/x
  3. Step 3: Cross multiply
    344,128.72x = 515,362.48 × 206,957.35
  4. Step 4: Simplify right side
    344,128.72x = 106,658,053,150.23
  5. Step 5: Solve for x
    x = 106,658,053,150.23/344,128.72
  6. Step 6: Final answer
    x = 309,936.51

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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.