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Finding the Fourth Proportional to 210,885.44, 291,025.55 and 115,393.73

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Solution

The fourth proportional to 210,885.44, 291,025.55 and 115,393.73 is: 159,245.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,885.44 : 291,025.55 = 115,393.73 : x
  2. Step 2: Convert to fraction form
    210,885.44/291,025.55 = 115,393.73/x
  3. Step 3: Cross multiply
    210,885.44x = 291,025.55 × 115,393.73
  4. Step 4: Simplify right side
    210,885.44x = 33,582,523,012.24
  5. Step 5: Solve for x
    x = 33,582,523,012.24/210,885.44
  6. Step 6: Final answer
    x = 159,245.34

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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.