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Finding the Fourth Proportional to 209,263.04, 313,850.28 and 68,988.32

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Solution

The fourth proportional to 209,263.04, 313,850.28 and 68,988.32 is: 103,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,263.04 : 313,850.28 = 68,988.32 : x
  2. Step 2: Convert to fraction form
    209,263.04/313,850.28 = 68,988.32/x
  3. Step 3: Cross multiply
    209,263.04x = 313,850.28 × 68,988.32
  4. Step 4: Simplify right side
    209,263.04x = 21,652,003,548.73
  5. Step 5: Solve for x
    x = 21,652,003,548.73/209,263.04
  6. Step 6: Final answer
    x = 103,467.88

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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.