Home / 211,221.52-291,485.64-115,731.84

Finding the Fourth Proportional to 211,221.52, 291,485.64 and 115,731.84

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Solution

The fourth proportional to 211,221.52, 291,485.64 and 115,731.84 is: 159,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,221.52 : 291,485.64 = 115,731.84 : x
  2. Step 2: Convert to fraction form
    211,221.52/291,485.64 = 115,731.84/x
  3. Step 3: Cross multiply
    211,221.52x = 291,485.64 × 115,731.84
  4. Step 4: Simplify right side
    211,221.52x = 33,734,169,450.78
  5. Step 5: Solve for x
    x = 33,734,169,450.78/211,221.52
  6. Step 6: Final answer
    x = 159,709.91

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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.