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Finding the Fourth Proportional to 356,664.06, 535,029.12 and 129,016.62

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Solution

The fourth proportional to 356,664.06, 535,029.12 and 129,016.62 is: 193,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,664.06 : 535,029.12 = 129,016.62 : x
  2. Step 2: Convert to fraction form
    356,664.06/535,029.12 = 129,016.62/x
  3. Step 3: Cross multiply
    356,664.06x = 535,029.12 × 129,016.62
  4. Step 4: Simplify right side
    356,664.06x = 69,027,648,663.97
  5. Step 5: Solve for x
    x = 69,027,648,663.97/356,664.06
  6. Step 6: Final answer
    x = 193,536.88

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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.