Home / 439,629.05-659,431.21-140,127.58

Finding the Fourth Proportional to 439,629.05, 659,431.21 and 140,127.58

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Solution

The fourth proportional to 439,629.05, 659,431.21 and 140,127.58 is: 210,187.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,629.05 : 659,431.21 = 140,127.58 : x
  2. Step 2: Convert to fraction form
    439,629.05/659,431.21 = 140,127.58/x
  3. Step 3: Cross multiply
    439,629.05x = 659,431.21 × 140,127.58
  4. Step 4: Simplify right side
    439,629.05x = 92,404,499,633.77
  5. Step 5: Solve for x
    x = 92,404,499,633.77/439,629.05
  6. Step 6: Final answer
    x = 210,187.43

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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.