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Finding the Fourth Proportional to 245,694.35, 368,543.59 and 68,215.20

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Solution

The fourth proportional to 245,694.35, 368,543.59 and 68,215.20 is: 102,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,694.35 : 368,543.59 = 68,215.20 : x
  2. Step 2: Convert to fraction form
    245,694.35/368,543.59 = 68,215.20/x
  3. Step 3: Cross multiply
    245,694.35x = 368,543.59 × 68,215.20
  4. Step 4: Simplify right side
    245,694.35x = 25,140,273,147.99
  5. Step 5: Solve for x
    x = 25,140,273,147.99/245,694.35
  6. Step 6: Final answer
    x = 102,323.37

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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.