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Finding the Fourth Proportional to 285,191.70, 427,765.28 and 74,824.17

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Solution

The fourth proportional to 285,191.70, 427,765.28 and 74,824.17 is: 112,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,191.70 : 427,765.28 = 74,824.17 : x
  2. Step 2: Convert to fraction form
    285,191.70/427,765.28 = 74,824.17/x
  3. Step 3: Cross multiply
    285,191.70x = 427,765.28 × 74,824.17
  4. Step 4: Simplify right side
    285,191.70x = 32,007,181,656.70
  5. Step 5: Solve for x
    x = 32,007,181,656.70/285,191.70
  6. Step 6: Final answer
    x = 112,230.41

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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.