Home / 312,118.07-430,676.76-189,546.71

Finding the Fourth Proportional to 312,118.07, 430,676.76 and 189,546.71

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Solution

The fourth proportional to 312,118.07, 430,676.76 and 189,546.71 is: 261,546.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,118.07 : 430,676.76 = 189,546.71 : x
  2. Step 2: Convert to fraction form
    312,118.07/430,676.76 = 189,546.71/x
  3. Step 3: Cross multiply
    312,118.07x = 430,676.76 × 189,546.71
  4. Step 4: Simplify right side
    312,118.07x = 81,633,362,931.46
  5. Step 5: Solve for x
    x = 81,633,362,931.46/312,118.07
  6. Step 6: Final answer
    x = 261,546.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.