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Finding the Fourth Proportional to 356,878.08, 492,489.43 and 203,963.04

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Solution

The fourth proportional to 356,878.08, 492,489.43 and 203,963.04 is: 281,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,878.08 : 492,489.43 = 203,963.04 : x
  2. Step 2: Convert to fraction form
    356,878.08/492,489.43 = 203,963.04/x
  3. Step 3: Cross multiply
    356,878.08x = 492,489.43 × 203,963.04
  4. Step 4: Simplify right side
    356,878.08x = 100,449,641,310.67
  5. Step 5: Solve for x
    x = 100,449,641,310.67/356,878.08
  6. Step 6: Final answer
    x = 281,467.67

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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.