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Finding the Fourth Proportional to 492,328.80, 738,493.20 and 281,793.60

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Solution

The fourth proportional to 492,328.80, 738,493.20 and 281,793.60 is: 422,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,328.80 : 738,493.20 = 281,793.60 : x
  2. Step 2: Convert to fraction form
    492,328.80/738,493.20 = 281,793.60/x
  3. Step 3: Cross multiply
    492,328.80x = 738,493.20 × 281,793.60
  4. Step 4: Simplify right side
    492,328.80x = 208,102,657,403.52
  5. Step 5: Solve for x
    x = 208,102,657,403.52/492,328.80
  6. Step 6: Final answer
    x = 422,690.40

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Similar ratio
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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.