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Finding the Fourth Proportional to 443,682.64, 665,787.48 and 163,396.72

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Solution

The fourth proportional to 443,682.64, 665,787.48 and 163,396.72 is: 245,192.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,682.64 : 665,787.48 = 163,396.72 : x
  2. Step 2: Convert to fraction form
    443,682.64/665,787.48 = 163,396.72/x
  3. Step 3: Cross multiply
    443,682.64x = 665,787.48 × 163,396.72
  4. Step 4: Simplify right side
    443,682.64x = 108,787,490,449.07
  5. Step 5: Solve for x
    x = 108,787,490,449.07/443,682.64
  6. Step 6: Final answer
    x = 245,192.13

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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.