Home / 286,806.56-430,206.19-128,923.38

Finding the Fourth Proportional to 286,806.56, 430,206.19 and 128,923.38

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Solution

The fourth proportional to 286,806.56, 430,206.19 and 128,923.38 is: 193,383.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,806.56 : 430,206.19 = 128,923.38 : x
  2. Step 2: Convert to fraction form
    286,806.56/430,206.19 = 128,923.38/x
  3. Step 3: Cross multiply
    286,806.56x = 430,206.19 × 128,923.38
  4. Step 4: Simplify right side
    286,806.56x = 55,463,635,789.41
  5. Step 5: Solve for x
    x = 55,463,635,789.41/286,806.56
  6. Step 6: Final answer
    x = 193,383.43

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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.