Home / 211,057.20-291,258.96-115,569.76

Finding the Fourth Proportional to 211,057.20, 291,258.96 and 115,569.76

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Solution

The fourth proportional to 211,057.20, 291,258.96 and 115,569.76 is: 159,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,057.20 : 291,258.96 = 115,569.76 : x
  2. Step 2: Convert to fraction form
    211,057.20/291,258.96 = 115,569.76/x
  3. Step 3: Cross multiply
    211,057.20x = 291,258.96 × 115,569.76
  4. Step 4: Simplify right side
    211,057.20x = 33,660,728,105.05
  5. Step 5: Solve for x
    x = 33,660,728,105.05/211,057.20
  6. Step 6: Final answer
    x = 159,486.28

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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.