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Finding the Fourth Proportional to 383,996.94, 529,312.38 and 262,928.88

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Solution

The fourth proportional to 383,996.94, 529,312.38 and 262,928.88 is: 362,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,996.94 : 529,312.38 = 262,928.88 : x
  2. Step 2: Convert to fraction form
    383,996.94/529,312.38 = 262,928.88/x
  3. Step 3: Cross multiply
    383,996.94x = 529,312.38 × 262,928.88
  4. Step 4: Simplify right side
    383,996.94x = 139,171,511,243.53
  5. Step 5: Solve for x
    x = 139,171,511,243.53/383,996.94
  6. Step 6: Final answer
    x = 362,428.70

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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.