Home / 211,372.18-291,690.25-115,879.53

Finding the Fourth Proportional to 211,372.18, 291,690.25 and 115,879.53

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Solution

The fourth proportional to 211,372.18, 291,690.25 and 115,879.53 is: 159,911.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,372.18 : 291,690.25 = 115,879.53 : x
  2. Step 2: Convert to fraction form
    211,372.18/291,690.25 = 115,879.53/x
  3. Step 3: Cross multiply
    211,372.18x = 291,690.25 × 115,879.53
  4. Step 4: Simplify right side
    211,372.18x = 33,800,929,075.58
  5. Step 5: Solve for x
    x = 33,800,929,075.58/211,372.18
  6. Step 6: Final answer
    x = 159,911.91

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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.