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Finding the Fourth Proportional to 356,163.55, 491,505.64 and 195,018.57

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Solution

The fourth proportional to 356,163.55, 491,505.64 and 195,018.57 is: 269,125.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,163.55 : 491,505.64 = 195,018.57 : x
  2. Step 2: Convert to fraction form
    356,163.55/491,505.64 = 195,018.57/x
  3. Step 3: Cross multiply
    356,163.55x = 491,505.64 × 195,018.57
  4. Step 4: Simplify right side
    356,163.55x = 95,852,726,572.19
  5. Step 5: Solve for x
    x = 95,852,726,572.19/356,163.55
  6. Step 6: Final answer
    x = 269,125.59

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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.