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Finding the Fourth Proportional to 376,284.30, 519,272.46 and 215,142.48

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Solution

The fourth proportional to 376,284.30, 519,272.46 and 215,142.48 is: 296,896.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,284.30 : 519,272.46 = 215,142.48 : x
  2. Step 2: Convert to fraction form
    376,284.30/519,272.46 = 215,142.48/x
  3. Step 3: Cross multiply
    376,284.30x = 519,272.46 × 215,142.48
  4. Step 4: Simplify right side
    376,284.30x = 111,717,564,840.10
  5. Step 5: Solve for x
    x = 111,717,564,840.10/376,284.30
  6. Step 6: Final answer
    x = 296,896.69

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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.