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Finding the Fourth Proportional to 368,685.32, 508,824.12 and 225,540.70

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Solution

The fourth proportional to 368,685.32, 508,824.12 and 225,540.70 is: 311,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,685.32 : 508,824.12 = 225,540.70 : x
  2. Step 2: Convert to fraction form
    368,685.32/508,824.12 = 225,540.70/x
  3. Step 3: Cross multiply
    368,685.32x = 508,824.12 × 225,540.70
  4. Step 4: Simplify right side
    368,685.32x = 114,760,548,201.68
  5. Step 5: Solve for x
    x = 114,760,548,201.68/368,685.32
  6. Step 6: Final answer
    x = 311,269.65

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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.