Home / 380,523.78-570,736.35-143,835.66

Finding the Fourth Proportional to 380,523.78, 570,736.35 and 143,835.66

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Solution

The fourth proportional to 380,523.78, 570,736.35 and 143,835.66 is: 215,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,523.78 : 570,736.35 = 143,835.66 : x
  2. Step 2: Convert to fraction form
    380,523.78/570,736.35 = 143,835.66/x
  3. Step 3: Cross multiply
    380,523.78x = 570,736.35 × 143,835.66
  4. Step 4: Simplify right side
    380,523.78x = 82,092,239,588.24
  5. Step 5: Solve for x
    x = 82,092,239,588.24/380,523.78
  6. Step 6: Final answer
    x = 215,734.85

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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.