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Finding the Fourth Proportional to 368,245.05, 508,119.12 and 207,099.60

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Solution

The fourth proportional to 368,245.05, 508,119.12 and 207,099.60 is: 285,764.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,245.05 : 508,119.12 = 207,099.60 : x
  2. Step 2: Convert to fraction form
    368,245.05/508,119.12 = 207,099.60/x
  3. Step 3: Cross multiply
    368,245.05x = 508,119.12 × 207,099.60
  4. Step 4: Simplify right side
    368,245.05x = 105,231,266,504.35
  5. Step 5: Solve for x
    x = 105,231,266,504.35/368,245.05
  6. Step 6: Final answer
    x = 285,764.24

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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.