Home / 211,129.34-291,358.46-115,636.28

Finding the Fourth Proportional to 211,129.34, 291,358.46 and 115,636.28

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Solution

The fourth proportional to 211,129.34, 291,358.46 and 115,636.28 is: 159,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,129.34 : 291,358.46 = 115,636.28 : x
  2. Step 2: Convert to fraction form
    211,129.34/291,358.46 = 115,636.28/x
  3. Step 3: Cross multiply
    211,129.34x = 291,358.46 × 115,636.28
  4. Step 4: Simplify right side
    211,129.34x = 33,691,608,460.93
  5. Step 5: Solve for x
    x = 33,691,608,460.93/211,129.34
  6. Step 6: Final answer
    x = 159,578.05

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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.