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Finding the Fourth Proportional to 443,660.49, 665,603 and 123,812.32

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Solution

The fourth proportional to 443,660.49, 665,603 and 123,812.32 is: 185,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,660.49 : 665,603 = 123,812.32 : x
  2. Step 2: Convert to fraction form
    443,660.49/665,603 = 123,812.32/x
  3. Step 3: Cross multiply
    443,660.49x = 665,603 × 123,812.32
  4. Step 4: Simplify right side
    443,660.49x = 82,409,851,628.96
  5. Step 5: Solve for x
    x = 82,409,851,628.96/443,660.49
  6. Step 6: Final answer
    x = 185,749.81

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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.