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Finding the Fourth Proportional to 330,815.70, 495,676.35 and 190,329.30

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Solution

The fourth proportional to 330,815.70, 495,676.35 and 190,329.30 is: 285,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,815.70 : 495,676.35 = 190,329.30 : x
  2. Step 2: Convert to fraction form
    330,815.70/495,676.35 = 190,329.30/x
  3. Step 3: Cross multiply
    330,815.70x = 495,676.35 × 190,329.30
  4. Step 4: Simplify right side
    330,815.70x = 94,341,732,722.06
  5. Step 5: Solve for x
    x = 94,341,732,722.06/330,815.70
  6. Step 6: Final answer
    x = 285,179.13

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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.