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Finding the Fourth Proportional to 245,589.81, 338,789.87 and 143,548.60

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Solution

The fourth proportional to 245,589.81, 338,789.87 and 143,548.60 is: 198,024.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,589.81 : 338,789.87 = 143,548.60 : x
  2. Step 2: Convert to fraction form
    245,589.81/338,789.87 = 143,548.60/x
  3. Step 3: Cross multiply
    245,589.81x = 338,789.87 × 143,548.60
  4. Step 4: Simplify right side
    245,589.81x = 48,632,811,532.68
  5. Step 5: Solve for x
    x = 48,632,811,532.68/245,589.81
  6. Step 6: Final answer
    x = 198,024.55

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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.