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Finding the Fourth Proportional to 330,842.90, 495,280.20 and 197,654.60

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Solution

The fourth proportional to 330,842.90, 495,280.20 and 197,654.60 is: 295,893.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,842.90 : 495,280.20 = 197,654.60 : x
  2. Step 2: Convert to fraction form
    330,842.90/495,280.20 = 197,654.60/x
  3. Step 3: Cross multiply
    330,842.90x = 495,280.20 × 197,654.60
  4. Step 4: Simplify right side
    330,842.90x = 97,894,409,818.92
  5. Step 5: Solve for x
    x = 97,894,409,818.92/330,842.90
  6. Step 6: Final answer
    x = 295,893.94

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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.