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Finding the Fourth Proportional to 443,361.65, 665,259.81 and 274,837.35

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Solution

The fourth proportional to 443,361.65, 665,259.81 and 274,837.35 is: 412,390.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,361.65 : 665,259.81 = 274,837.35 : x
  2. Step 2: Convert to fraction form
    443,361.65/665,259.81 = 274,837.35/x
  3. Step 3: Cross multiply
    443,361.65x = 665,259.81 × 274,837.35
  4. Step 4: Simplify right side
    443,361.65x = 182,838,245,478.97
  5. Step 5: Solve for x
    x = 182,838,245,478.97/443,361.65
  6. Step 6: Final answer
    x = 412,390.75

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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.