Home / 214,200.47-321,367.84-128,904.38

Finding the Fourth Proportional to 214,200.47, 321,367.84 and 128,904.38

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Solution

The fourth proportional to 214,200.47, 321,367.84 and 128,904.38 is: 193,396.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,200.47 : 321,367.84 = 128,904.38 : x
  2. Step 2: Convert to fraction form
    214,200.47/321,367.84 = 128,904.38/x
  3. Step 3: Cross multiply
    214,200.47x = 321,367.84 × 128,904.38
  4. Step 4: Simplify right side
    214,200.47x = 41,425,722,648.30
  5. Step 5: Solve for x
    x = 41,425,722,648.30/214,200.47
  6. Step 6: Final answer
    x = 193,396.98

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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.