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Finding the Fourth Proportional to 209,041.22, 313,600.72 and 68,809.70

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Solution

The fourth proportional to 209,041.22, 313,600.72 and 68,809.70 is: 103,227.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,041.22 : 313,600.72 = 68,809.70 : x
  2. Step 2: Convert to fraction form
    209,041.22/313,600.72 = 68,809.70/x
  3. Step 3: Cross multiply
    209,041.22x = 313,600.72 × 68,809.70
  4. Step 4: Simplify right side
    209,041.22x = 21,578,771,462.98
  5. Step 5: Solve for x
    x = 21,578,771,462.98/209,041.22
  6. Step 6: Final answer
    x = 103,227.35

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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.