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Finding the Fourth Proportional to 208,910.04, 313,298.58 and 68,636.28

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Solution

The fourth proportional to 208,910.04, 313,298.58 and 68,636.28 is: 102,932.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,910.04 : 313,298.58 = 68,636.28 : x
  2. Step 2: Convert to fraction form
    208,910.04/313,298.58 = 68,636.28/x
  3. Step 3: Cross multiply
    208,910.04x = 313,298.58 × 68,636.28
  4. Step 4: Simplify right side
    208,910.04x = 21,503,649,060.48
  5. Step 5: Solve for x
    x = 21,503,649,060.48/208,910.04
  6. Step 6: Final answer
    x = 102,932.58

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1.5x scale

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.