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Finding the Fourth Proportional to 285,238.35, 427,824.18 and 74,892.69

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Solution

The fourth proportional to 285,238.35, 427,824.18 and 74,892.69 is: 112,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,238.35 : 427,824.18 = 74,892.69 : x
  2. Step 2: Convert to fraction form
    285,238.35/427,824.18 = 74,892.69/x
  3. Step 3: Cross multiply
    285,238.35x = 427,824.18 × 74,892.69
  4. Step 4: Simplify right side
    285,238.35x = 32,040,903,687.24
  5. Step 5: Solve for x
    x = 32,040,903,687.24/285,238.35
  6. Step 6: Final answer
    x = 112,330.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.