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Finding the Fourth Proportional to 281,898.83, 389,028.12 and 161,059.79

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Solution

The fourth proportional to 281,898.83, 389,028.12 and 161,059.79 is: 222,266.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,898.83 : 389,028.12 = 161,059.79 : x
  2. Step 2: Convert to fraction form
    281,898.83/389,028.12 = 161,059.79/x
  3. Step 3: Cross multiply
    281,898.83x = 389,028.12 × 161,059.79
  4. Step 4: Simplify right side
    281,898.83x = 62,656,787,679.89
  5. Step 5: Solve for x
    x = 62,656,787,679.89/281,898.83
  6. Step 6: Final answer
    x = 222,266.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.