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Finding the Fourth Proportional to 204,670.58, 307,038.72 and 86,359.34

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Solution

The fourth proportional to 204,670.58, 307,038.72 and 86,359.34 is: 129,552.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,670.58 : 307,038.72 = 86,359.34 : x
  2. Step 2: Convert to fraction form
    204,670.58/307,038.72 = 86,359.34/x
  3. Step 3: Cross multiply
    204,670.58x = 307,038.72 × 86,359.34
  4. Step 4: Simplify right side
    204,670.58x = 26,515,661,213.64
  5. Step 5: Solve for x
    x = 26,515,661,213.64/204,670.58
  6. Step 6: Final answer
    x = 129,552.87

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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.