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Finding the Fourth Proportional to 450,431.05, 675,751.71 and 130,589.59

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Solution

The fourth proportional to 450,431.05, 675,751.71 and 130,589.59 is: 195,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,431.05 : 675,751.71 = 130,589.59 : x
  2. Step 2: Convert to fraction form
    450,431.05/675,751.71 = 130,589.59/x
  3. Step 3: Cross multiply
    450,431.05x = 675,751.71 × 130,589.59
  4. Step 4: Simplify right side
    450,431.05x = 88,246,138,750.70
  5. Step 5: Solve for x
    x = 88,246,138,750.70/450,431.05
  6. Step 6: Final answer
    x = 195,914.87

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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.