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Finding the Fourth Proportional to 298,382.40, 447,719.40 and 140,583.60

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Solution

The fourth proportional to 298,382.40, 447,719.40 and 140,583.60 is: 210,944.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,382.40 : 447,719.40 = 140,583.60 : x
  2. Step 2: Convert to fraction form
    298,382.40/447,719.40 = 140,583.60/x
  3. Step 3: Cross multiply
    298,382.40x = 447,719.40 × 140,583.60
  4. Step 4: Simplify right side
    298,382.40x = 62,942,005,041.84
  5. Step 5: Solve for x
    x = 62,942,005,041.84/298,382.40
  6. Step 6: Final answer
    x = 210,944.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.