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Finding the Fourth Proportional to 219,185.37, 328,775.78 and 69,425.61

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Solution

The fourth proportional to 219,185.37, 328,775.78 and 69,425.61 is: 104,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,185.37 : 328,775.78 = 69,425.61 : x
  2. Step 2: Convert to fraction form
    219,185.37/328,775.78 = 69,425.61/x
  3. Step 3: Cross multiply
    219,185.37x = 328,775.78 × 69,425.61
  4. Step 4: Simplify right side
    219,185.37x = 22,825,458,732.60
  5. Step 5: Solve for x
    x = 22,825,458,732.60/219,185.37
  6. Step 6: Final answer
    x = 104,137.69

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1.5x scale

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.