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Finding the Fourth Proportional to 386,018.99, 532,727.45 and 213,933.38

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Solution

The fourth proportional to 386,018.99, 532,727.45 and 213,933.38 is: 295,239.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,018.99 : 532,727.45 = 213,933.38 : x
  2. Step 2: Convert to fraction form
    386,018.99/532,727.45 = 213,933.38/x
  3. Step 3: Cross multiply
    386,018.99x = 532,727.45 × 213,933.38
  4. Step 4: Simplify right side
    386,018.99x = 113,968,181,868.48
  5. Step 5: Solve for x
    x = 113,968,181,868.48/386,018.99
  6. Step 6: Final answer
    x = 295,239.83

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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.