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Finding the Fourth Proportional to 403,477.05, 605,295.32 and 119,172.54

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Solution

The fourth proportional to 403,477.05, 605,295.32 and 119,172.54 is: 178,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,477.05 : 605,295.32 = 119,172.54 : x
  2. Step 2: Convert to fraction form
    403,477.05/605,295.32 = 119,172.54/x
  3. Step 3: Cross multiply
    403,477.05x = 605,295.32 × 119,172.54
  4. Step 4: Simplify right side
    403,477.05x = 72,134,580,138.65
  5. Step 5: Solve for x
    x = 72,134,580,138.65/403,477.05
  6. Step 6: Final answer
    x = 178,782.36

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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.