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Finding the Fourth Proportional to 492,279.60, 738,419.40 and 303,322.80

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Solution

The fourth proportional to 492,279.60, 738,419.40 and 303,322.80 is: 454,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,279.60 : 738,419.40 = 303,322.80 : x
  2. Step 2: Convert to fraction form
    492,279.60/738,419.40 = 303,322.80/x
  3. Step 3: Cross multiply
    492,279.60x = 738,419.40 × 303,322.80
  4. Step 4: Simplify right side
    492,279.60x = 223,979,439,982.32
  5. Step 5: Solve for x
    x = 223,979,439,982.32/492,279.60
  6. Step 6: Final answer
    x = 454,984.20

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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.