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Finding the Fourth Proportional to 300,809.60, 451,214.40 and 268,150.40

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Solution

The fourth proportional to 300,809.60, 451,214.40 and 268,150.40 is: 402,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,809.60 : 451,214.40 = 268,150.40 : x
  2. Step 2: Convert to fraction form
    300,809.60/451,214.40 = 268,150.40/x
  3. Step 3: Cross multiply
    300,809.60x = 451,214.40 × 268,150.40
  4. Step 4: Simplify right side
    300,809.60x = 120,993,321,845.76
  5. Step 5: Solve for x
    x = 120,993,321,845.76/300,809.60
  6. Step 6: Final answer
    x = 402,225.60

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1.5x scale

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.