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Finding the Fourth Proportional to 490,093.40, 734,556.90 and 205,783.40

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Solution

The fourth proportional to 490,093.40, 734,556.90 and 205,783.40 is: 308,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,093.40 : 734,556.90 = 205,783.40 : x
  2. Step 2: Convert to fraction form
    490,093.40/734,556.90 = 205,783.40/x
  3. Step 3: Cross multiply
    490,093.40x = 734,556.90 × 205,783.40
  4. Step 4: Simplify right side
    490,093.40x = 151,159,616,375.46
  5. Step 5: Solve for x
    x = 151,159,616,375.46/490,093.40
  6. Step 6: Final answer
    x = 308,430.22

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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.