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Finding the Fourth Proportional to 245,518.64, 338,764.91 and 143,524.38

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Solution

The fourth proportional to 245,518.64, 338,764.91 and 143,524.38 is: 198,033.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,518.64 : 338,764.91 = 143,524.38 : x
  2. Step 2: Convert to fraction form
    245,518.64/338,764.91 = 143,524.38/x
  3. Step 3: Cross multiply
    245,518.64x = 338,764.91 × 143,524.38
  4. Step 4: Simplify right side
    245,518.64x = 48,621,022,955.88
  5. Step 5: Solve for x
    x = 48,621,022,955.88/245,518.64
  6. Step 6: Final answer
    x = 198,033.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.