Home / 214,881.12-322,380-65,115.36

Finding the Fourth Proportional to 214,881.12, 322,380 and 65,115.36

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Solution

The fourth proportional to 214,881.12, 322,380 and 65,115.36 is: 97,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,881.12 : 322,380 = 65,115.36 : x
  2. Step 2: Convert to fraction form
    214,881.12/322,380 = 65,115.36/x
  3. Step 3: Cross multiply
    214,881.12x = 322,380 × 65,115.36
  4. Step 4: Simplify right side
    214,881.12x = 20,991,889,756.80
  5. Step 5: Solve for x
    x = 20,991,889,756.80/214,881.12
  6. Step 6: Final answer
    x = 97,690.71

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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.