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Finding the Fourth Proportional to 386,114.79, 579,249.33 and 133,404.51

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Solution

The fourth proportional to 386,114.79, 579,249.33 and 133,404.51 is: 200,133.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,114.79 : 579,249.33 = 133,404.51 : x
  2. Step 2: Convert to fraction form
    386,114.79/579,249.33 = 133,404.51/x
  3. Step 3: Cross multiply
    386,114.79x = 579,249.33 × 133,404.51
  4. Step 4: Simplify right side
    386,114.79x = 77,274,473,036.48
  5. Step 5: Solve for x
    x = 77,274,473,036.48/386,114.79
  6. Step 6: Final answer
    x = 200,133.42

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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.