Home / 214,619.60-321,929.40-109,643.60

Finding the Fourth Proportional to 214,619.60, 321,929.40 and 109,643.60

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Solution

The fourth proportional to 214,619.60, 321,929.40 and 109,643.60 is: 164,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,619.60 : 321,929.40 = 109,643.60 : x
  2. Step 2: Convert to fraction form
    214,619.60/321,929.40 = 109,643.60/x
  3. Step 3: Cross multiply
    214,619.60x = 321,929.40 × 109,643.60
  4. Step 4: Simplify right side
    214,619.60x = 35,297,498,361.84
  5. Step 5: Solve for x
    x = 35,297,498,361.84/214,619.60
  6. Step 6: Final answer
    x = 164,465.40

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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.