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Finding the Fourth Proportional to 440,388.90, 660,608.46 and 124,821

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Solution

The fourth proportional to 440,388.90, 660,608.46 and 124,821 is: 187,238.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,388.90 : 660,608.46 = 124,821 : x
  2. Step 2: Convert to fraction form
    440,388.90/660,608.46 = 124,821/x
  3. Step 3: Cross multiply
    440,388.90x = 660,608.46 × 124,821
  4. Step 4: Simplify right side
    440,388.90x = 82,457,808,585.66
  5. Step 5: Solve for x
    x = 82,457,808,585.66/440,388.90
  6. Step 6: Final answer
    x = 187,238.62

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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.