Home / 211,401.28-291,731.69-115,907.75

Finding the Fourth Proportional to 211,401.28, 291,731.69 and 115,907.75

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Solution

The fourth proportional to 211,401.28, 291,731.69 and 115,907.75 is: 159,951.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,401.28 : 291,731.69 = 115,907.75 : x
  2. Step 2: Convert to fraction form
    211,401.28/291,731.69 = 115,907.75/x
  3. Step 3: Cross multiply
    211,401.28x = 291,731.69 × 115,907.75
  4. Step 4: Simplify right side
    211,401.28x = 33,813,963,791.60
  5. Step 5: Solve for x
    x = 33,813,963,791.60/211,401.28
  6. Step 6: Final answer
    x = 159,951.56

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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.