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Finding the Fourth Proportional to 245,670.56, 368,504.58 and 212,289.20

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Solution

The fourth proportional to 245,670.56, 368,504.58 and 212,289.20 is: 318,432.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,670.56 : 368,504.58 = 212,289.20 : x
  2. Step 2: Convert to fraction form
    245,670.56/368,504.58 = 212,289.20/x
  3. Step 3: Cross multiply
    245,670.56x = 368,504.58 × 212,289.20
  4. Step 4: Simplify right side
    245,670.56x = 78,229,542,484.54
  5. Step 5: Solve for x
    x = 78,229,542,484.54/245,670.56
  6. Step 6: Final answer
    x = 318,432.71

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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.