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Finding the Fourth Proportional to 324,539.70, 486,579.15 and 124,782.90

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Solution

The fourth proportional to 324,539.70, 486,579.15 and 124,782.90 is: 187,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,539.70 : 486,579.15 = 124,782.90 : x
  2. Step 2: Convert to fraction form
    324,539.70/486,579.15 = 124,782.90/x
  3. Step 3: Cross multiply
    324,539.70x = 486,579.15 × 124,782.90
  4. Step 4: Simplify right side
    324,539.70x = 60,716,757,416.54
  5. Step 5: Solve for x
    x = 60,716,757,416.54/324,539.70
  6. Step 6: Final answer
    x = 187,085.76

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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.