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Finding the Fourth Proportional to 362,388.64, 543,343.08 and 172,878.28

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Solution

The fourth proportional to 362,388.64, 543,343.08 and 172,878.28 is: 259,202.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,388.64 : 543,343.08 = 172,878.28 : x
  2. Step 2: Convert to fraction form
    362,388.64/543,343.08 = 172,878.28/x
  3. Step 3: Cross multiply
    362,388.64x = 543,343.08 × 172,878.28
  4. Step 4: Simplify right side
    362,388.64x = 93,932,217,120.30
  5. Step 5: Solve for x
    x = 93,932,217,120.30/362,388.64
  6. Step 6: Final answer
    x = 259,202.98

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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.