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Finding the Fourth Proportional to 296,910.79, 445,385.21 and 104,761.64

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Solution

The fourth proportional to 296,910.79, 445,385.21 and 104,761.64 is: 157,149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,910.79 : 445,385.21 = 104,761.64 : x
  2. Step 2: Convert to fraction form
    296,910.79/445,385.21 = 104,761.64/x
  3. Step 3: Cross multiply
    296,910.79x = 445,385.21 × 104,761.64
  4. Step 4: Simplify right side
    296,910.79x = 46,659,285,031.34
  5. Step 5: Solve for x
    x = 46,659,285,031.34/296,910.79
  6. Step 6: Final answer
    x = 157,149.17

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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.