Home / 214,699.60-321,790.20-109,464.40

Finding the Fourth Proportional to 214,699.60, 321,790.20 and 109,464.40

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Solution

The fourth proportional to 214,699.60, 321,790.20 and 109,464.40 is: 164,064.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,699.60 : 321,790.20 = 109,464.40 : x
  2. Step 2: Convert to fraction form
    214,699.60/321,790.20 = 109,464.40/x
  3. Step 3: Cross multiply
    214,699.60x = 321,790.20 × 109,464.40
  4. Step 4: Simplify right side
    214,699.60x = 35,224,571,168.88
  5. Step 5: Solve for x
    x = 35,224,571,168.88/214,699.60
  6. Step 6: Final answer
    x = 164,064.45

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1.5x scale

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.