Home / 389,619.44-584,078.28-140,126

Finding the Fourth Proportional to 389,619.44, 584,078.28 and 140,126

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Solution

The fourth proportional to 389,619.44, 584,078.28 and 140,126 is: 210,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,619.44 : 584,078.28 = 140,126 : x
  2. Step 2: Convert to fraction form
    389,619.44/584,078.28 = 140,126/x
  3. Step 3: Cross multiply
    389,619.44x = 584,078.28 × 140,126
  4. Step 4: Simplify right side
    389,619.44x = 81,844,553,063.28
  5. Step 5: Solve for x
    x = 81,844,553,063.28/389,619.44
  6. Step 6: Final answer
    x = 210,062.81

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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.