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Finding the Fourth Proportional to 440,604.90, 660,921.72 and 209,743.80

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Solution

The fourth proportional to 440,604.90, 660,921.72 and 209,743.80 is: 314,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,604.90 : 660,921.72 = 209,743.80 : x
  2. Step 2: Convert to fraction form
    440,604.90/660,921.72 = 209,743.80/x
  3. Step 3: Cross multiply
    440,604.90x = 660,921.72 × 209,743.80
  4. Step 4: Simplify right side
    440,604.90x = 138,624,233,055.34
  5. Step 5: Solve for x
    x = 138,624,233,055.34/440,604.90
  6. Step 6: Final answer
    x = 314,622.54

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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.