Home / 321,487.12-482,164.80-121,738.60

Finding the Fourth Proportional to 321,487.12, 482,164.80 and 121,738.60

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Solution

The fourth proportional to 321,487.12, 482,164.80 and 121,738.60 is: 182,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,487.12 : 482,164.80 = 121,738.60 : x
  2. Step 2: Convert to fraction form
    321,487.12/482,164.80 = 121,738.60/x
  3. Step 3: Cross multiply
    321,487.12x = 482,164.80 × 121,738.60
  4. Step 4: Simplify right side
    321,487.12x = 58,698,067,721.28
  5. Step 5: Solve for x
    x = 58,698,067,721.28/321,487.12
  6. Step 6: Final answer
    x = 182,582.95

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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.