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Finding the Fourth Proportional to 443,579.66, 612,125.31 and 280,323.41

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Solution

The fourth proportional to 443,579.66, 612,125.31 and 280,323.41 is: 386,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,579.66 : 612,125.31 = 280,323.41 : x
  2. Step 2: Convert to fraction form
    443,579.66/612,125.31 = 280,323.41/x
  3. Step 3: Cross multiply
    443,579.66x = 612,125.31 × 280,323.41
  4. Step 4: Simplify right side
    443,579.66x = 171,593,051,185.88
  5. Step 5: Solve for x
    x = 171,593,051,185.88/443,579.66
  6. Step 6: Final answer
    x = 386,837.06

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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.