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Finding the Fourth Proportional to 331,679, 457,397.32 and 223,028.12

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Solution

The fourth proportional to 331,679, 457,397.32 and 223,028.12 is: 307,563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,679 : 457,397.32 = 223,028.12 : x
  2. Step 2: Convert to fraction form
    331,679/457,397.32 = 223,028.12/x
  3. Step 3: Cross multiply
    331,679x = 457,397.32 × 223,028.12
  4. Step 4: Simplify right side
    331,679x = 102,012,464,372.64
  5. Step 5: Solve for x
    x = 102,012,464,372.64/331,679
  6. Step 6: Final answer
    x = 307,563.83

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1.5x scale

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.