Home / 217,936.60-326,904.90-77,644.60

Finding the Fourth Proportional to 217,936.60, 326,904.90 and 77,644.60

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Solution

The fourth proportional to 217,936.60, 326,904.90 and 77,644.60 is: 116,466.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,936.60 : 326,904.90 = 77,644.60 : x
  2. Step 2: Convert to fraction form
    217,936.60/326,904.90 = 77,644.60/x
  3. Step 3: Cross multiply
    217,936.60x = 326,904.90 × 77,644.60
  4. Step 4: Simplify right side
    217,936.60x = 25,382,400,198.54
  5. Step 5: Solve for x
    x = 25,382,400,198.54/217,936.60
  6. Step 6: Final answer
    x = 116,466.90

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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.