Home / 214,016,054.20-321,024,081.30-212,821,660.60

Finding the Fourth Proportional to 214,016,054.20, 321,024,081.30 and 212,821,660.60

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Solution

The fourth proportional to 214,016,054.20, 321,024,081.30 and 212,821,660.60 is: 319,232,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,016,054.20 : 321,024,081.30 = 212,821,660.60 : x
  2. Step 2: Convert to fraction form
    214,016,054.20/321,024,081.30 = 212,821,660.60/x
  3. Step 3: Cross multiply
    214,016,054.20x = 321,024,081.30 × 212,821,660.60
  4. Step 4: Simplify right side
    214,016,054.20x = 68,320,878,074,855,408
  5. Step 5: Solve for x
    x = 68,320,878,074,855,408/214,016,054.20
  6. Step 6: Final answer
    x = 319,232,490.90

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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.