Home / 211,022.76-291,200.49-115,511.34

Finding the Fourth Proportional to 211,022.76, 291,200.49 and 115,511.34

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Solution

The fourth proportional to 211,022.76, 291,200.49 and 115,511.34 is: 159,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,022.76 : 291,200.49 = 115,511.34 : x
  2. Step 2: Convert to fraction form
    211,022.76/291,200.49 = 115,511.34/x
  3. Step 3: Cross multiply
    211,022.76x = 291,200.49 × 115,511.34
  4. Step 4: Simplify right side
    211,022.76x = 33,636,958,808.56
  5. Step 5: Solve for x
    x = 33,636,958,808.56/211,022.76
  6. Step 6: Final answer
    x = 159,399.67

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Half scale
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Double scale
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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.