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Finding the Fourth Proportional to 368,120.64, 552,098.88 and 143,487.12

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Solution

The fourth proportional to 368,120.64, 552,098.88 and 143,487.12 is: 215,198.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,120.64 : 552,098.88 = 143,487.12 : x
  2. Step 2: Convert to fraction form
    368,120.64/552,098.88 = 143,487.12/x
  3. Step 3: Cross multiply
    368,120.64x = 552,098.88 × 143,487.12
  4. Step 4: Simplify right side
    368,120.64x = 79,219,078,246.43
  5. Step 5: Solve for x
    x = 79,219,078,246.43/368,120.64
  6. Step 6: Final answer
    x = 215,198.69

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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.