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Finding the Fourth Proportional to 214,503.57, 321,556.74 and 79,492.47

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Solution

The fourth proportional to 214,503.57, 321,556.74 and 79,492.47 is: 119,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,503.57 : 321,556.74 = 79,492.47 : x
  2. Step 2: Convert to fraction form
    214,503.57/321,556.74 = 79,492.47/x
  3. Step 3: Cross multiply
    214,503.57x = 321,556.74 × 79,492.47
  4. Step 4: Simplify right side
    214,503.57x = 25,561,339,507.75
  5. Step 5: Solve for x
    x = 25,561,339,507.75/214,503.57
  6. Step 6: Final answer
    x = 119,165.10

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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.