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Finding the Fourth Proportional to 356,838.08, 535,257.36 and 90,618.56

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Solution

The fourth proportional to 356,838.08, 535,257.36 and 90,618.56 is: 135,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,838.08 : 535,257.36 = 90,618.56 : x
  2. Step 2: Convert to fraction form
    356,838.08/535,257.36 = 90,618.56/x
  3. Step 3: Cross multiply
    356,838.08x = 535,257.36 × 90,618.56
  4. Step 4: Simplify right side
    356,838.08x = 48,504,251,192.60
  5. Step 5: Solve for x
    x = 48,504,251,192.60/356,838.08
  6. Step 6: Final answer
    x = 135,927.90

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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.