Home / 211,380.79-291,705.42-115,885.44

Finding the Fourth Proportional to 211,380.79, 291,705.42 and 115,885.44

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Solution

The fourth proportional to 211,380.79, 291,705.42 and 115,885.44 is: 159,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,380.79 : 291,705.42 = 115,885.44 : x
  2. Step 2: Convert to fraction form
    211,380.79/291,705.42 = 115,885.44/x
  3. Step 3: Cross multiply
    211,380.79x = 291,705.42 × 115,885.44
  4. Step 4: Simplify right side
    211,380.79x = 33,804,410,947.08
  5. Step 5: Solve for x
    x = 33,804,410,947.08/211,380.79
  6. Step 6: Final answer
    x = 159,921.87

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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.