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Finding the Fourth Proportional to 440,604.65, 660,921.35 and 209,743.55

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Solution

The fourth proportional to 440,604.65, 660,921.35 and 209,743.55 is: 314,622.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,604.65 : 660,921.35 = 209,743.55 : x
  2. Step 2: Convert to fraction form
    440,604.65/660,921.35 = 209,743.55/x
  3. Step 3: Cross multiply
    440,604.65x = 660,921.35 × 209,743.55
  4. Step 4: Simplify right side
    440,604.65x = 138,623,989,171.08
  5. Step 5: Solve for x
    x = 138,623,989,171.08/440,604.65
  6. Step 6: Final answer
    x = 314,622.17

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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.