Home / 211,005.30-291,185.37-115,511.70

Finding the Fourth Proportional to 211,005.30, 291,185.37 and 115,511.70

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Solution

The fourth proportional to 211,005.30, 291,185.37 and 115,511.70 is: 159,405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,005.30 : 291,185.37 = 115,511.70 : x
  2. Step 2: Convert to fraction form
    211,005.30/291,185.37 = 115,511.70/x
  3. Step 3: Cross multiply
    211,005.30x = 291,185.37 × 115,511.70
  4. Step 4: Simplify right side
    211,005.30x = 33,635,317,103.83
  5. Step 5: Solve for x
    x = 33,635,317,103.83/211,005.30
  6. Step 6: Final answer
    x = 159,405.08

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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.