Home / 386,406.72-579,708.66-120,169.44

Finding the Fourth Proportional to 386,406.72, 579,708.66 and 120,169.44

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Solution

The fourth proportional to 386,406.72, 579,708.66 and 120,169.44 is: 180,284.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,406.72 : 579,708.66 = 120,169.44 : x
  2. Step 2: Convert to fraction form
    386,406.72/579,708.66 = 120,169.44/x
  3. Step 3: Cross multiply
    386,406.72x = 579,708.66 × 120,169.44
  4. Step 4: Simplify right side
    386,406.72x = 69,663,265,035.35
  5. Step 5: Solve for x
    x = 69,663,265,035.35/386,406.72
  6. Step 6: Final answer
    x = 180,284.82

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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.