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Finding the Fourth Proportional to 245,640.24, 368,460.24 and 68,147.28

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Solution

The fourth proportional to 245,640.24, 368,460.24 and 68,147.28 is: 102,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,640.24 : 368,460.24 = 68,147.28 : x
  2. Step 2: Convert to fraction form
    245,640.24/368,460.24 = 68,147.28/x
  3. Step 3: Cross multiply
    245,640.24x = 368,460.24 × 68,147.28
  4. Step 4: Simplify right side
    245,640.24x = 25,109,563,144.15
  5. Step 5: Solve for x
    x = 25,109,563,144.15/245,640.24
  6. Step 6: Final answer
    x = 102,220.89

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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.