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Finding the Fourth Proportional to 768,900.60, 1,153,350.90 and 200,280.60

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Solution

The fourth proportional to 768,900.60, 1,153,350.90 and 200,280.60 is: 300,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,900.60 : 1,153,350.90 = 200,280.60 : x
  2. Step 2: Convert to fraction form
    768,900.60/1,153,350.90 = 200,280.60/x
  3. Step 3: Cross multiply
    768,900.60x = 1,153,350.90 × 200,280.60
  4. Step 4: Simplify right side
    768,900.60x = 230,993,810,262.54
  5. Step 5: Solve for x
    x = 230,993,810,262.54/768,900.60
  6. Step 6: Final answer
    x = 300,420.90

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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.