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Finding the Fourth Proportional to 321,637.87, 443,913.41 and 178,444.04

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Solution

The fourth proportional to 321,637.87, 443,913.41 and 178,444.04 is: 246,282.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,637.87 : 443,913.41 = 178,444.04 : x
  2. Step 2: Convert to fraction form
    321,637.87/443,913.41 = 178,444.04/x
  3. Step 3: Cross multiply
    321,637.87x = 443,913.41 × 178,444.04
  4. Step 4: Simplify right side
    321,637.87x = 79,213,702,508.14
  5. Step 5: Solve for x
    x = 79,213,702,508.14/321,637.87
  6. Step 6: Final answer
    x = 246,282.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.