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Finding the Fourth Proportional to 281,955.61, 422,958.28 and 79,553.49

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Solution

The fourth proportional to 281,955.61, 422,958.28 and 79,553.49 is: 119,337.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,955.61 : 422,958.28 = 79,553.49 : x
  2. Step 2: Convert to fraction form
    281,955.61/422,958.28 = 79,553.49/x
  3. Step 3: Cross multiply
    281,955.61x = 422,958.28 × 79,553.49
  4. Step 4: Simplify right side
    281,955.61x = 33,647,807,298.40
  5. Step 5: Solve for x
    x = 33,647,807,298.40/281,955.61
  6. Step 6: Final answer
    x = 119,337.25

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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.