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Finding the Fourth Proportional to 403,019.20, 603,837.60 and 262,705.60

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Solution

The fourth proportional to 403,019.20, 603,837.60 and 262,705.60 is: 393,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,019.20 : 603,837.60 = 262,705.60 : x
  2. Step 2: Convert to fraction form
    403,019.20/603,837.60 = 262,705.60/x
  3. Step 3: Cross multiply
    403,019.20x = 603,837.60 × 262,705.60
  4. Step 4: Simplify right side
    403,019.20x = 158,631,519,010.56
  5. Step 5: Solve for x
    x = 158,631,519,010.56/403,019.20
  6. Step 6: Final answer
    x = 393,607.85

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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.