Home / 211,081.60-291,288.64-115,586.56

Finding the Fourth Proportional to 211,081.60, 291,288.64 and 115,586.56

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Solution

The fourth proportional to 211,081.60, 291,288.64 and 115,586.56 is: 159,507.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,081.60 : 291,288.64 = 115,586.56 : x
  2. Step 2: Convert to fraction form
    211,081.60/291,288.64 = 115,586.56/x
  3. Step 3: Cross multiply
    211,081.60x = 291,288.64 × 115,586.56
  4. Step 4: Simplify right side
    211,081.60x = 33,669,051,864.68
  5. Step 5: Solve for x
    x = 33,669,051,864.68/211,081.60
  6. Step 6: Final answer
    x = 159,507.28

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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.