Home / 285,747.64-428,579.34-75,400.36

Finding the Fourth Proportional to 285,747.64, 428,579.34 and 75,400.36

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Solution

The fourth proportional to 285,747.64, 428,579.34 and 75,400.36 is: 113,089.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,747.64 : 428,579.34 = 75,400.36 : x
  2. Step 2: Convert to fraction form
    285,747.64/428,579.34 = 75,400.36/x
  3. Step 3: Cross multiply
    285,747.64x = 428,579.34 × 75,400.36
  4. Step 4: Simplify right side
    285,747.64x = 32,315,036,524.56
  5. Step 5: Solve for x
    x = 32,315,036,524.56/285,747.64
  6. Step 6: Final answer
    x = 113,089.43

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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.