Home / 211,320.21-291,621.29-115,826.61

Finding the Fourth Proportional to 211,320.21, 291,621.29 and 115,826.61

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Solution

The fourth proportional to 211,320.21, 291,621.29 and 115,826.61 is: 159,840.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,320.21 : 291,621.29 = 115,826.61 : x
  2. Step 2: Convert to fraction form
    211,320.21/291,621.29 = 115,826.61/x
  3. Step 3: Cross multiply
    211,320.21x = 291,621.29 × 115,826.61
  4. Step 4: Simplify right side
    211,320.21x = 33,777,504,845.39
  5. Step 5: Solve for x
    x = 33,777,504,845.39/211,320.21
  6. Step 6: Final answer
    x = 159,840.39

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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.