Home / 211,081.71-291,289.80-115,588.38

Finding the Fourth Proportional to 211,081.71, 291,289.80 and 115,588.38

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Solution

The fourth proportional to 211,081.71, 291,289.80 and 115,588.38 is: 159,510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,081.71 : 291,289.80 = 115,588.38 : x
  2. Step 2: Convert to fraction form
    211,081.71/291,289.80 = 115,588.38/x
  3. Step 3: Cross multiply
    211,081.71x = 291,289.80 × 115,588.38
  4. Step 4: Simplify right side
    211,081.71x = 33,669,716,092.52
  5. Step 5: Solve for x
    x = 33,669,716,092.52/211,081.71
  6. Step 6: Final answer
    x = 159,510.34

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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.