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Finding the Fourth Proportional to 279,415.88, 384,859.35 and 214,761.48

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Solution

The fourth proportional to 279,415.88, 384,859.35 and 214,761.48 is: 295,806.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,415.88 : 384,859.35 = 214,761.48 : x
  2. Step 2: Convert to fraction form
    279,415.88/384,859.35 = 214,761.48/x
  3. Step 3: Cross multiply
    279,415.88x = 384,859.35 × 214,761.48
  4. Step 4: Simplify right side
    279,415.88x = 82,652,962,154.62
  5. Step 5: Solve for x
    x = 82,652,962,154.62/279,415.88
  6. Step 6: Final answer
    x = 295,806.25

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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.