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Finding the Fourth Proportional to 281,970.59, 422,980.79 and 79,568.49

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Solution

The fourth proportional to 281,970.59, 422,980.79 and 79,568.49 is: 119,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,970.59 : 422,980.79 = 79,568.49 : x
  2. Step 2: Convert to fraction form
    281,970.59/422,980.79 = 79,568.49/x
  3. Step 3: Cross multiply
    281,970.59x = 422,980.79 × 79,568.49
  4. Step 4: Simplify right side
    281,970.59x = 33,655,940,378.74
  5. Step 5: Solve for x
    x = 33,655,940,378.74/281,970.59
  6. Step 6: Final answer
    x = 119,359.75

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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.