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Finding the Fourth Proportional to 443,392.65, 665,125.56 and 190,679.13

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Solution

The fourth proportional to 443,392.65, 665,125.56 and 190,679.13 is: 286,034.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,392.65 : 665,125.56 = 190,679.13 : x
  2. Step 2: Convert to fraction form
    443,392.65/665,125.56 = 190,679.13/x
  3. Step 3: Cross multiply
    443,392.65x = 665,125.56 × 190,679.13
  4. Step 4: Simplify right side
    443,392.65x = 126,825,563,121.56
  5. Step 5: Solve for x
    x = 126,825,563,121.56/443,392.65
  6. Step 6: Final answer
    x = 286,034.43

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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.