Home / 426,739.23-640,114.11-127,229.58

Finding the Fourth Proportional to 426,739.23, 640,114.11 and 127,229.58

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Solution

The fourth proportional to 426,739.23, 640,114.11 and 127,229.58 is: 190,845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,739.23 : 640,114.11 = 127,229.58 : x
  2. Step 2: Convert to fraction form
    426,739.23/640,114.11 = 127,229.58/x
  3. Step 3: Cross multiply
    426,739.23x = 640,114.11 × 127,229.58
  4. Step 4: Simplify right side
    426,739.23x = 81,441,449,367.37
  5. Step 5: Solve for x
    x = 81,441,449,367.37/426,739.23
  6. Step 6: Final answer
    x = 190,845.94

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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.