Home / 211,345.20-291,654-115,851.60

Finding the Fourth Proportional to 211,345.20, 291,654 and 115,851.60

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Solution

The fourth proportional to 211,345.20, 291,654 and 115,851.60 is: 159,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,345.20 : 291,654 = 115,851.60 : x
  2. Step 2: Convert to fraction form
    211,345.20/291,654 = 115,851.60/x
  3. Step 3: Cross multiply
    211,345.20x = 291,654 × 115,851.60
  4. Step 4: Simplify right side
    211,345.20x = 33,788,582,546.40
  5. Step 5: Solve for x
    x = 33,788,582,546.40/211,345.20
  6. Step 6: Final answer
    x = 159,873.91

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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.