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Finding the Fourth Proportional to 245,820, 368,738.64 and 140,590.56

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Solution

The fourth proportional to 245,820, 368,738.64 and 140,590.56 is: 210,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,820 : 368,738.64 = 140,590.56 : x
  2. Step 2: Convert to fraction form
    245,820/368,738.64 = 140,590.56/x
  3. Step 3: Cross multiply
    245,820x = 368,738.64 × 140,590.56
  4. Step 4: Simplify right side
    245,820x = 51,841,171,891.24
  5. Step 5: Solve for x
    x = 51,841,171,891.24/245,820
  6. Step 6: Final answer
    x = 210,890.78

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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.