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Finding the Fourth Proportional to 386,562.91, 579,705.39 and 133,774.75

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Solution

The fourth proportional to 386,562.91, 579,705.39 and 133,774.75 is: 200,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,562.91 : 579,705.39 = 133,774.75 : x
  2. Step 2: Convert to fraction form
    386,562.91/579,705.39 = 133,774.75/x
  3. Step 3: Cross multiply
    386,562.91x = 579,705.39 × 133,774.75
  4. Step 4: Simplify right side
    386,562.91x = 77,549,943,620.90
  5. Step 5: Solve for x
    x = 77,549,943,620.90/386,562.91
  6. Step 6: Final answer
    x = 200,614.03

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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.