Home / 211,382.69-291,708.09-115,890.05

Finding the Fourth Proportional to 211,382.69, 291,708.09 and 115,890.05

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Solution

The fourth proportional to 211,382.69, 291,708.09 and 115,890.05 is: 159,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,382.69 : 291,708.09 = 115,890.05 : x
  2. Step 2: Convert to fraction form
    211,382.69/291,708.09 = 115,890.05/x
  3. Step 3: Cross multiply
    211,382.69x = 291,708.09 × 115,890.05
  4. Step 4: Simplify right side
    211,382.69x = 33,806,065,135.50
  5. Step 5: Solve for x
    x = 33,806,065,135.50/211,382.69
  6. Step 6: Final answer
    x = 159,928.26

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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.