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Finding the Fourth Proportional to 355,370.06, 490,363.41 and 228,217.94

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Solution

The fourth proportional to 355,370.06, 490,363.41 and 228,217.94 is: 314,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,370.06 : 490,363.41 = 228,217.94 : x
  2. Step 2: Convert to fraction form
    355,370.06/490,363.41 = 228,217.94/x
  3. Step 3: Cross multiply
    355,370.06x = 490,363.41 × 228,217.94
  4. Step 4: Simplify right side
    355,370.06x = 111,909,727,281.58
  5. Step 5: Solve for x
    x = 111,909,727,281.58/355,370.06
  6. Step 6: Final answer
    x = 314,910.40

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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.