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Finding the Fourth Proportional to 492,078.40, 738,117.60 and 159,654.40

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Solution

The fourth proportional to 492,078.40, 738,117.60 and 159,654.40 is: 239,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,078.40 : 738,117.60 = 159,654.40 : x
  2. Step 2: Convert to fraction form
    492,078.40/738,117.60 = 159,654.40/x
  3. Step 3: Cross multiply
    492,078.40x = 738,117.60 × 159,654.40
  4. Step 4: Simplify right side
    492,078.40x = 117,843,722,557.44
  5. Step 5: Solve for x
    x = 117,843,722,557.44/492,078.40
  6. Step 6: Final answer
    x = 239,481.60

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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.