Home / 214,434.21-321,222.45-128,997.93

Finding the Fourth Proportional to 214,434.21, 321,222.45 and 128,997.93

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Solution

The fourth proportional to 214,434.21, 321,222.45 and 128,997.93 is: 193,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,434.21 : 321,222.45 = 128,997.93 : x
  2. Step 2: Convert to fraction form
    214,434.21/321,222.45 = 128,997.93/x
  3. Step 3: Cross multiply
    214,434.21x = 321,222.45 × 128,997.93
  4. Step 4: Simplify right side
    214,434.21x = 41,437,031,119.53
  5. Step 5: Solve for x
    x = 41,437,031,119.53/214,434.21
  6. Step 6: Final answer
    x = 193,238.90

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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.