Home / 210,921.36-291,207.32-188,221.31

Finding the Fourth Proportional to 210,921.36, 291,207.32 and 188,221.31

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Solution

The fourth proportional to 210,921.36, 291,207.32 and 188,221.31 is: 259,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,921.36 : 291,207.32 = 188,221.31 : x
  2. Step 2: Convert to fraction form
    210,921.36/291,207.32 = 188,221.31/x
  3. Step 3: Cross multiply
    210,921.36x = 291,207.32 × 188,221.31
  4. Step 4: Simplify right side
    210,921.36x = 54,811,422,310.88
  5. Step 5: Solve for x
    x = 54,811,422,310.88/210,921.36
  6. Step 6: Final answer
    x = 259,866.63

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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.