Home / 211,815.88-292,232.83-135,379.71

Finding the Fourth Proportional to 211,815.88, 292,232.83 and 135,379.71

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Solution

The fourth proportional to 211,815.88, 292,232.83 and 135,379.71 is: 186,777.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,815.88 : 292,232.83 = 135,379.71 : x
  2. Step 2: Convert to fraction form
    211,815.88/292,232.83 = 135,379.71/x
  3. Step 3: Cross multiply
    211,815.88x = 292,232.83 × 135,379.71
  4. Step 4: Simplify right side
    211,815.88x = 39,562,395,777.88
  5. Step 5: Solve for x
    x = 39,562,395,777.88/211,815.88
  6. Step 6: Final answer
    x = 186,777.29

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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.