Home / 211,107.16-291,317.06-115,595.40

Finding the Fourth Proportional to 211,107.16, 291,317.06 and 115,595.40

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Solution

The fourth proportional to 211,107.16, 291,317.06 and 115,595.40 is: 159,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,107.16 : 291,317.06 = 115,595.40 : x
  2. Step 2: Convert to fraction form
    211,107.16/291,317.06 = 115,595.40/x
  3. Step 3: Cross multiply
    211,107.16x = 291,317.06 × 115,595.40
  4. Step 4: Simplify right side
    211,107.16x = 33,674,912,808.73
  5. Step 5: Solve for x
    x = 33,674,912,808.73/211,107.16
  6. Step 6: Final answer
    x = 159,515.73

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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.