Home / 211,008.78-291,225.92-120,394.22

Finding the Fourth Proportional to 211,008.78, 291,225.92 and 120,394.22

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Solution

The fourth proportional to 211,008.78, 291,225.92 and 120,394.22 is: 166,163.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,008.78 : 291,225.92 = 120,394.22 : x
  2. Step 2: Convert to fraction form
    211,008.78/291,225.92 = 120,394.22/x
  3. Step 3: Cross multiply
    211,008.78x = 291,225.92 × 120,394.22
  4. Step 4: Simplify right side
    211,008.78x = 35,061,915,424.08
  5. Step 5: Solve for x
    x = 35,061,915,424.08/211,008.78
  6. Step 6: Final answer
    x = 166,163.30

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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.