Home / 211,085.76-291,285-115,593.60

Finding the Fourth Proportional to 211,085.76, 291,285 and 115,593.60

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Solution

The fourth proportional to 211,085.76, 291,285 and 115,593.60 is: 159,511.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,085.76 : 291,285 = 115,593.60 : x
  2. Step 2: Convert to fraction form
    211,085.76/291,285 = 115,593.60/x
  3. Step 3: Cross multiply
    211,085.76x = 291,285 × 115,593.60
  4. Step 4: Simplify right side
    211,085.76x = 33,670,681,776
  5. Step 5: Solve for x
    x = 33,670,681,776/211,085.76
  6. Step 6: Final answer
    x = 159,511.86

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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.