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Finding the Fourth Proportional to 440,186.67, 660,192.53 and 215,450.55

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Solution

The fourth proportional to 440,186.67, 660,192.53 and 215,450.55 is: 323,133.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,186.67 : 660,192.53 = 215,450.55 : x
  2. Step 2: Convert to fraction form
    440,186.67/660,192.53 = 215,450.55/x
  3. Step 3: Cross multiply
    440,186.67x = 660,192.53 × 215,450.55
  4. Step 4: Simplify right side
    440,186.67x = 142,238,842,617.14
  5. Step 5: Solve for x
    x = 142,238,842,617.14/440,186.67
  6. Step 6: Final answer
    x = 323,133.01

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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.