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Finding the Fourth Proportional to 443,351.80, 665,027.70 and 206,718.40

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Solution

The fourth proportional to 443,351.80, 665,027.70 and 206,718.40 is: 310,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,351.80 : 665,027.70 = 206,718.40 : x
  2. Step 2: Convert to fraction form
    443,351.80/665,027.70 = 206,718.40/x
  3. Step 3: Cross multiply
    443,351.80x = 665,027.70 × 206,718.40
  4. Step 4: Simplify right side
    443,351.80x = 137,473,462,099.68
  5. Step 5: Solve for x
    x = 137,473,462,099.68/443,351.80
  6. Step 6: Final answer
    x = 310,077.60

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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.