Home / 211,158.28-291,398.48-115,668.40

Finding the Fourth Proportional to 211,158.28, 291,398.48 and 115,668.40

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Solution

The fourth proportional to 211,158.28, 291,398.48 and 115,668.40 is: 159,622.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,158.28 : 291,398.48 = 115,668.40 : x
  2. Step 2: Convert to fraction form
    211,158.28/291,398.48 = 115,668.40/x
  3. Step 3: Cross multiply
    211,158.28x = 291,398.48 × 115,668.40
  4. Step 4: Simplify right side
    211,158.28x = 33,705,595,944.03
  5. Step 5: Solve for x
    x = 33,705,595,944.03/211,158.28
  6. Step 6: Final answer
    x = 159,622.42

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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.