Home / 211,380.90-291,724.02-115,906.20

Finding the Fourth Proportional to 211,380.90, 291,724.02 and 115,906.20

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Solution

The fourth proportional to 211,380.90, 291,724.02 and 115,906.20 is: 159,960.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,380.90 : 291,724.02 = 115,906.20 : x
  2. Step 2: Convert to fraction form
    211,380.90/291,724.02 = 115,906.20/x
  3. Step 3: Cross multiply
    211,380.90x = 291,724.02 × 115,906.20
  4. Step 4: Simplify right side
    211,380.90x = 33,812,622,606.92
  5. Step 5: Solve for x
    x = 33,812,622,606.92/211,380.90
  6. Step 6: Final answer
    x = 159,960.63

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1.5x scale

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.