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Finding the Fourth Proportional to 653,231.64, 979,466.11 and 253,405.22

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Solution

The fourth proportional to 653,231.64, 979,466.11 and 253,405.22 is: 379,959.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,231.64 : 979,466.11 = 253,405.22 : x
  2. Step 2: Convert to fraction form
    653,231.64/979,466.11 = 253,405.22/x
  3. Step 3: Cross multiply
    653,231.64x = 979,466.11 × 253,405.22
  4. Step 4: Simplify right side
    653,231.64x = 248,201,819,556.25
  5. Step 5: Solve for x
    x = 248,201,819,556.25/653,231.64
  6. Step 6: Final answer
    x = 379,959.88

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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.