Home / 211,455.28-291,781.39-120,817.11

Finding the Fourth Proportional to 211,455.28, 291,781.39 and 120,817.11

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Solution

The fourth proportional to 211,455.28, 291,781.39 and 120,817.11 is: 166,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,455.28 : 291,781.39 = 120,817.11 : x
  2. Step 2: Convert to fraction form
    211,455.28/291,781.39 = 120,817.11/x
  3. Step 3: Cross multiply
    211,455.28x = 291,781.39 × 120,817.11
  4. Step 4: Simplify right side
    211,455.28x = 35,252,184,291.58
  5. Step 5: Solve for x
    x = 35,252,184,291.58/211,455.28
  6. Step 6: Final answer
    x = 166,712.24

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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.