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Finding the Fourth Proportional to 515,539.36, 772,998.36 and 231,178.42

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Solution

The fourth proportional to 515,539.36, 772,998.36 and 231,178.42 is: 346,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,539.36 : 772,998.36 = 231,178.42 : x
  2. Step 2: Convert to fraction form
    515,539.36/772,998.36 = 231,178.42/x
  3. Step 3: Cross multiply
    515,539.36x = 772,998.36 × 231,178.42
  4. Step 4: Simplify right side
    515,539.36x = 178,700,539,527.39
  5. Step 5: Solve for x
    x = 178,700,539,527.39/515,539.36
  6. Step 6: Final answer
    x = 346,628.31

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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.