Home / 211,272.86-291,564.01-115,779.55

Finding the Fourth Proportional to 211,272.86, 291,564.01 and 115,779.55

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Solution

The fourth proportional to 211,272.86, 291,564.01 and 115,779.55 is: 159,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,272.86 : 291,564.01 = 115,779.55 : x
  2. Step 2: Convert to fraction form
    211,272.86/291,564.01 = 115,779.55/x
  3. Step 3: Cross multiply
    211,272.86x = 291,564.01 × 115,779.55
  4. Step 4: Simplify right side
    211,272.86x = 33,757,150,005.26
  5. Step 5: Solve for x
    x = 33,757,150,005.26/211,272.86
  6. Step 6: Final answer
    x = 159,779.87

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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.