Home / 214,201.58-321,369.52-128,905.50

Finding the Fourth Proportional to 214,201.58, 321,369.52 and 128,905.50

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Solution

The fourth proportional to 214,201.58, 321,369.52 and 128,905.50 is: 193,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,201.58 : 321,369.52 = 128,905.50 : x
  2. Step 2: Convert to fraction form
    214,201.58/321,369.52 = 128,905.50/x
  3. Step 3: Cross multiply
    214,201.58x = 321,369.52 × 128,905.50
  4. Step 4: Simplify right side
    214,201.58x = 41,426,298,660.36
  5. Step 5: Solve for x
    x = 41,426,298,660.36/214,201.58
  6. Step 6: Final answer
    x = 193,398.66

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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.