Home / 211,438.86-291,789.63-115,939.86

Finding the Fourth Proportional to 211,438.86, 291,789.63 and 115,939.86

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Solution

The fourth proportional to 211,438.86, 291,789.63 and 115,939.86 is: 159,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,438.86 : 291,789.63 = 115,939.86 : x
  2. Step 2: Convert to fraction form
    211,438.86/291,789.63 = 115,939.86/x
  3. Step 3: Cross multiply
    211,438.86x = 291,789.63 × 115,939.86
  4. Step 4: Simplify right side
    211,438.86x = 33,830,048,851.65
  5. Step 5: Solve for x
    x = 33,830,048,851.65/211,438.86
  6. Step 6: Final answer
    x = 159,999.20

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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.