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Finding the Fourth Proportional to 481,191.50, 664,219.24 and 279,987.50

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Solution

The fourth proportional to 481,191.50, 664,219.24 and 279,987.50 is: 386,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,191.50 : 664,219.24 = 279,987.50 : x
  2. Step 2: Convert to fraction form
    481,191.50/664,219.24 = 279,987.50/x
  3. Step 3: Cross multiply
    481,191.50x = 664,219.24 × 279,987.50
  4. Step 4: Simplify right side
    481,191.50x = 185,973,084,459.50
  5. Step 5: Solve for x
    x = 185,973,084,459.50/481,191.50
  6. Step 6: Final answer
    x = 386,484.56

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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.