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Finding the Fourth Proportional to 309,438.88, 463,675.20 and 214,853.44

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Solution

The fourth proportional to 309,438.88, 463,675.20 and 214,853.44 is: 321,944.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,438.88 : 463,675.20 = 214,853.44 : x
  2. Step 2: Convert to fraction form
    309,438.88/463,675.20 = 214,853.44/x
  3. Step 3: Cross multiply
    309,438.88x = 463,675.20 × 214,853.44
  4. Step 4: Simplify right side
    309,438.88x = 99,622,211,762.69
  5. Step 5: Solve for x
    x = 99,622,211,762.69/309,438.88
  6. Step 6: Final answer
    x = 321,944.71

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1.5x scale

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.