Home / 211,216-291,610.56-135,895.36

Finding the Fourth Proportional to 211,216, 291,610.56 and 135,895.36

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Solution

The fourth proportional to 211,216, 291,610.56 and 135,895.36 is: 187,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,216 : 291,610.56 = 135,895.36 : x
  2. Step 2: Convert to fraction form
    211,216/291,610.56 = 135,895.36/x
  3. Step 3: Cross multiply
    211,216x = 291,610.56 × 135,895.36
  4. Step 4: Simplify right side
    211,216x = 39,628,522,031.00
  5. Step 5: Solve for x
    x = 39,628,522,031.00/211,216
  6. Step 6: Final answer
    x = 187,620.83

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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.