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Finding the Fourth Proportional to 489,556.40, 733,945.80 and 267,940.40

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Solution

The fourth proportional to 489,556.40, 733,945.80 and 267,940.40 is: 401,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,556.40 : 733,945.80 = 267,940.40 : x
  2. Step 2: Convert to fraction form
    489,556.40/733,945.80 = 267,940.40/x
  3. Step 3: Cross multiply
    489,556.40x = 733,945.80 × 267,940.40
  4. Step 4: Simplify right side
    489,556.40x = 196,653,731,230.32
  5. Step 5: Solve for x
    x = 196,653,731,230.32/489,556.40
  6. Step 6: Final answer
    x = 401,697.80

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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.