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Finding the Fourth Proportional to 273,622.68, 410,429.16 and 86,634.72

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Solution

The fourth proportional to 273,622.68, 410,429.16 and 86,634.72 is: 129,950.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,622.68 : 410,429.16 = 86,634.72 : x
  2. Step 2: Convert to fraction form
    273,622.68/410,429.16 = 86,634.72/x
  3. Step 3: Cross multiply
    273,622.68x = 410,429.16 × 86,634.72
  4. Step 4: Simplify right side
    273,622.68x = 35,557,415,356.44
  5. Step 5: Solve for x
    x = 35,557,415,356.44/273,622.68
  6. Step 6: Final answer
    x = 129,950.54

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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.