Home / 211,534.22-291,808.51-138,926.69

Finding the Fourth Proportional to 211,534.22, 291,808.51 and 138,926.69

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Solution

The fourth proportional to 211,534.22, 291,808.51 and 138,926.69 is: 191,647.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,534.22 : 291,808.51 = 138,926.69 : x
  2. Step 2: Convert to fraction form
    211,534.22/291,808.51 = 138,926.69/x
  3. Step 3: Cross multiply
    211,534.22x = 291,808.51 × 138,926.69
  4. Step 4: Simplify right side
    211,534.22x = 40,539,990,408.13
  5. Step 5: Solve for x
    x = 40,539,990,408.13/211,534.22
  6. Step 6: Final answer
    x = 191,647.43

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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.