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Finding the Fourth Proportional to 443,940.82, 612,637.49 and 239,991.86

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Solution

The fourth proportional to 443,940.82, 612,637.49 and 239,991.86 is: 331,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,940.82 : 612,637.49 = 239,991.86 : x
  2. Step 2: Convert to fraction form
    443,940.82/612,637.49 = 239,991.86/x
  3. Step 3: Cross multiply
    443,940.82x = 612,637.49 × 239,991.86
  4. Step 4: Simplify right side
    443,940.82x = 147,028,012,862.41
  5. Step 5: Solve for x
    x = 147,028,012,862.41/443,940.82
  6. Step 6: Final answer
    x = 331,188.32

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1.5x scale

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.