Home / 386,360.28-579,537.54-120,120.30

Finding the Fourth Proportional to 386,360.28, 579,537.54 and 120,120.30

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Solution

The fourth proportional to 386,360.28, 579,537.54 and 120,120.30 is: 180,179.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,360.28 : 579,537.54 = 120,120.30 : x
  2. Step 2: Convert to fraction form
    386,360.28/579,537.54 = 120,120.30/x
  3. Step 3: Cross multiply
    386,360.28x = 579,537.54 × 120,120.30
  4. Step 4: Simplify right side
    386,360.28x = 69,614,223,166.06
  5. Step 5: Solve for x
    x = 69,614,223,166.06/386,360.28
  6. Step 6: Final answer
    x = 180,179.55

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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.