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Finding the Fourth Proportional to 255,703.68, 383,760.96 and 115,474.56

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Solution

The fourth proportional to 255,703.68, 383,760.96 and 115,474.56 is: 173,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,703.68 : 383,760.96 = 115,474.56 : x
  2. Step 2: Convert to fraction form
    255,703.68/383,760.96 = 115,474.56/x
  3. Step 3: Cross multiply
    255,703.68x = 383,760.96 × 115,474.56
  4. Step 4: Simplify right side
    255,703.68x = 44,314,628,001.18
  5. Step 5: Solve for x
    x = 44,314,628,001.18/255,703.68
  6. Step 6: Final answer
    x = 173,304.62

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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.