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Finding the Fourth Proportional to 386,561.41, 579,703.15 and 133,773.26

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Solution

The fourth proportional to 386,561.41, 579,703.15 and 133,773.26 is: 200,611.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,561.41 : 579,703.15 = 133,773.26 : x
  2. Step 2: Convert to fraction form
    386,561.41/579,703.15 = 133,773.26/x
  3. Step 3: Cross multiply
    386,561.41x = 579,703.15 × 133,773.26
  4. Step 4: Simplify right side
    386,561.41x = 77,548,776,640.39
  5. Step 5: Solve for x
    x = 77,548,776,640.39/386,561.41
  6. Step 6: Final answer
    x = 200,611.79

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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.