Home / 386,489.05-579,773.29-133,769.12

Finding the Fourth Proportional to 386,489.05, 579,773.29 and 133,769.12

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Solution

The fourth proportional to 386,489.05, 579,773.29 and 133,769.12 is: 200,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,489.05 : 579,773.29 = 133,769.12 : x
  2. Step 2: Convert to fraction form
    386,489.05/579,773.29 = 133,769.12/x
  3. Step 3: Cross multiply
    386,489.05x = 579,773.29 × 133,769.12
  4. Step 4: Simplify right side
    386,489.05x = 77,555,762,802.80
  5. Step 5: Solve for x
    x = 77,555,762,802.80/386,489.05
  6. Step 6: Final answer
    x = 200,667.43

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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.