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Finding the Fourth Proportional to 443,912.42, 666,342.48 and 191,317.57

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Solution

The fourth proportional to 443,912.42, 666,342.48 and 191,317.57 is: 287,180.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,912.42 : 666,342.48 = 191,317.57 : x
  2. Step 2: Convert to fraction form
    443,912.42/666,342.48 = 191,317.57/x
  3. Step 3: Cross multiply
    443,912.42x = 666,342.48 × 191,317.57
  4. Step 4: Simplify right side
    443,912.42x = 127,483,019,773.07
  5. Step 5: Solve for x
    x = 127,483,019,773.07/443,912.42
  6. Step 6: Final answer
    x = 287,180.57

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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.