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Finding the Fourth Proportional to 386,069.81, 579,182.13 and 133,359.53

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Solution

The fourth proportional to 386,069.81, 579,182.13 and 133,359.53 is: 200,066.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,069.81 : 579,182.13 = 133,359.53 : x
  2. Step 2: Convert to fraction form
    386,069.81/579,182.13 = 133,359.53/x
  3. Step 3: Cross multiply
    386,069.81x = 579,182.13 × 133,359.53
  4. Step 4: Simplify right side
    386,069.81x = 77,239,453,745.29
  5. Step 5: Solve for x
    x = 77,239,453,745.29/386,069.81
  6. Step 6: Final answer
    x = 200,066.03

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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.