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Finding the Fourth Proportional to 356,736.52, 492,198.42 and 220,705.12

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Solution

The fourth proportional to 356,736.52, 492,198.42 and 220,705.12 is: 304,512.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,736.52 : 492,198.42 = 220,705.12 : x
  2. Step 2: Convert to fraction form
    356,736.52/492,198.42 = 220,705.12/x
  3. Step 3: Cross multiply
    356,736.52x = 492,198.42 × 220,705.12
  4. Step 4: Simplify right side
    356,736.52x = 108,630,711,349.91
  5. Step 5: Solve for x
    x = 108,630,711,349.91/356,736.52
  6. Step 6: Final answer
    x = 304,512.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.