Home / 214,000.20-321,000.30-103,408.20

Finding the Fourth Proportional to 214,000.20, 321,000.30 and 103,408.20

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Solution

The fourth proportional to 214,000.20, 321,000.30 and 103,408.20 is: 155,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,000.20 : 321,000.30 = 103,408.20 : x
  2. Step 2: Convert to fraction form
    214,000.20/321,000.30 = 103,408.20/x
  3. Step 3: Cross multiply
    214,000.20x = 321,000.30 × 103,408.20
  4. Step 4: Simplify right side
    214,000.20x = 33,194,063,222.46
  5. Step 5: Solve for x
    x = 33,194,063,222.46/214,000.20
  6. Step 6: Final answer
    x = 155,112.30

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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.