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Finding the Fourth Proportional to 356,369.94, 491,790.52 and 213,129.98

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Solution

The fourth proportional to 356,369.94, 491,790.52 and 213,129.98 is: 294,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,369.94 : 491,790.52 = 213,129.98 : x
  2. Step 2: Convert to fraction form
    356,369.94/491,790.52 = 213,129.98/x
  3. Step 3: Cross multiply
    356,369.94x = 491,790.52 × 213,129.98
  4. Step 4: Simplify right side
    356,369.94x = 104,815,305,660.21
  5. Step 5: Solve for x
    x = 104,815,305,660.21/356,369.94
  6. Step 6: Final answer
    x = 294,119.38

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1.5x scale

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.