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Finding the Fourth Proportional to 330,648.84, 495,962.28 and 143,660.34

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Solution

The fourth proportional to 330,648.84, 495,962.28 and 143,660.34 is: 215,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,648.84 : 495,962.28 = 143,660.34 : x
  2. Step 2: Convert to fraction form
    330,648.84/495,962.28 = 143,660.34/x
  3. Step 3: Cross multiply
    330,648.84x = 495,962.28 × 143,660.34
  4. Step 4: Simplify right side
    330,648.84x = 71,250,109,771.98
  5. Step 5: Solve for x
    x = 71,250,109,771.98/330,648.84
  6. Step 6: Final answer
    x = 215,485.74

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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.