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Finding the Fourth Proportional to 443,668.14, 665,190.54 and 155,409.30

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Solution

The fourth proportional to 443,668.14, 665,190.54 and 155,409.30 is: 233,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,668.14 : 665,190.54 = 155,409.30 : x
  2. Step 2: Convert to fraction form
    443,668.14/665,190.54 = 155,409.30/x
  3. Step 3: Cross multiply
    443,668.14x = 665,190.54 × 155,409.30
  4. Step 4: Simplify right side
    443,668.14x = 103,376,796,188.02
  5. Step 5: Solve for x
    x = 103,376,796,188.02/443,668.14
  6. Step 6: Final answer
    x = 233,004.78

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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.