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Finding the Fourth Proportional to 492,253.80, 738,380.70 and 281,718.60

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Solution

The fourth proportional to 492,253.80, 738,380.70 and 281,718.60 is: 422,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,253.80 : 738,380.70 = 281,718.60 : x
  2. Step 2: Convert to fraction form
    492,253.80/738,380.70 = 281,718.60/x
  3. Step 3: Cross multiply
    492,253.80x = 738,380.70 × 281,718.60
  4. Step 4: Simplify right side
    492,253.80x = 208,015,577,071.02
  5. Step 5: Solve for x
    x = 208,015,577,071.02/492,253.80
  6. Step 6: Final answer
    x = 422,577.90

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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.