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Finding the Fourth Proportional to 481,483.69, 664,333.38 and 285,151.01

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Solution

The fourth proportional to 481,483.69, 664,333.38 and 285,151.01 is: 393,440.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,483.69 : 664,333.38 = 285,151.01 : x
  2. Step 2: Convert to fraction form
    481,483.69/664,333.38 = 285,151.01/x
  3. Step 3: Cross multiply
    481,483.69x = 664,333.38 × 285,151.01
  4. Step 4: Simplify right side
    481,483.69x = 189,435,330,962.05
  5. Step 5: Solve for x
    x = 189,435,330,962.05/481,483.69
  6. Step 6: Final answer
    x = 393,440.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.