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Finding the Fourth Proportional to 443,912.71, 665,935.37 and 163,408.63

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Solution

The fourth proportional to 443,912.71, 665,935.37 and 163,408.63 is: 245,137.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,912.71 : 665,935.37 = 163,408.63 : x
  2. Step 2: Convert to fraction form
    443,912.71/665,935.37 = 163,408.63/x
  3. Step 3: Cross multiply
    443,912.71x = 665,935.37 × 163,408.63
  4. Step 4: Simplify right side
    443,912.71x = 108,819,586,480.24
  5. Step 5: Solve for x
    x = 108,819,586,480.24/443,912.71
  6. Step 6: Final answer
    x = 245,137.35

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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.