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Finding the Fourth Proportional to 481,662.48, 664,373.85 and 309,797.93

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Solution

The fourth proportional to 481,662.48, 664,373.85 and 309,797.93 is: 427,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,662.48 : 664,373.85 = 309,797.93 : x
  2. Step 2: Convert to fraction form
    481,662.48/664,373.85 = 309,797.93/x
  3. Step 3: Cross multiply
    481,662.48x = 664,373.85 × 309,797.93
  4. Step 4: Simplify right side
    481,662.48x = 205,821,643,975.32
  5. Step 5: Solve for x
    x = 205,821,643,975.32/481,662.48
  6. Step 6: Final answer
    x = 427,315.08

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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.