Home / 386,589.42-579,923.94-133,869.42

Finding the Fourth Proportional to 386,589.42, 579,923.94 and 133,869.42

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Solution

The fourth proportional to 386,589.42, 579,923.94 and 133,869.42 is: 200,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,589.42 : 579,923.94 = 133,869.42 : x
  2. Step 2: Convert to fraction form
    386,589.42/579,923.94 = 133,869.42/x
  3. Step 3: Cross multiply
    386,589.42x = 579,923.94 × 133,869.42
  4. Step 4: Simplify right side
    386,589.42x = 77,634,081,491.91
  5. Step 5: Solve for x
    x = 77,634,081,491.91/386,589.42
  6. Step 6: Final answer
    x = 200,817.92

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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.