Home / 211,198.32-291,372.12-135,788.40

Finding the Fourth Proportional to 211,198.32, 291,372.12 and 135,788.40

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Solution

The fourth proportional to 211,198.32, 291,372.12 and 135,788.40 is: 187,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,198.32 : 291,372.12 = 135,788.40 : x
  2. Step 2: Convert to fraction form
    211,198.32/291,372.12 = 135,788.40/x
  3. Step 3: Cross multiply
    211,198.32x = 291,372.12 × 135,788.40
  4. Step 4: Simplify right side
    211,198.32x = 39,564,953,979.41
  5. Step 5: Solve for x
    x = 39,564,953,979.41/211,198.32
  6. Step 6: Final answer
    x = 187,335.55

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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.