Home / 210,780.72-290,873.79-115,285.37

Finding the Fourth Proportional to 210,780.72, 290,873.79 and 115,285.37

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Solution

The fourth proportional to 210,780.72, 290,873.79 and 115,285.37 is: 159,091.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,780.72 : 290,873.79 = 115,285.37 : x
  2. Step 2: Convert to fraction form
    210,780.72/290,873.79 = 115,285.37/x
  3. Step 3: Cross multiply
    210,780.72x = 290,873.79 × 115,285.37
  4. Step 4: Simplify right side
    210,780.72x = 33,533,491,049.08
  5. Step 5: Solve for x
    x = 33,533,491,049.08/210,780.72
  6. Step 6: Final answer
    x = 159,091.83

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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.