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Finding the Fourth Proportional to 330,662.82, 495,983.28 and 143,674.32

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Solution

The fourth proportional to 330,662.82, 495,983.28 and 143,674.32 is: 215,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,662.82 : 495,983.28 = 143,674.32 : x
  2. Step 2: Convert to fraction form
    330,662.82/495,983.28 = 143,674.32/x
  3. Step 3: Cross multiply
    330,662.82x = 495,983.28 × 143,674.32
  4. Step 4: Simplify right side
    330,662.82x = 71,260,060,485.37
  5. Step 5: Solve for x
    x = 71,260,060,485.37/330,662.82
  6. Step 6: Final answer
    x = 215,506.72

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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.