Home / 211,028.28-291,246.75-120,363.47

Finding the Fourth Proportional to 211,028.28, 291,246.75 and 120,363.47

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Solution

The fourth proportional to 211,028.28, 291,246.75 and 120,363.47 is: 166,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,028.28 : 291,246.75 = 120,363.47 : x
  2. Step 2: Convert to fraction form
    211,028.28/291,246.75 = 120,363.47/x
  3. Step 3: Cross multiply
    211,028.28x = 291,246.75 × 120,363.47
  4. Step 4: Simplify right side
    211,028.28x = 35,055,467,999.99
  5. Step 5: Solve for x
    x = 35,055,467,999.99/211,028.28
  6. Step 6: Final answer
    x = 166,117.39

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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.