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Finding the Fourth Proportional to 324,539.20, 486,578.40 and 124,782.40

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Solution

The fourth proportional to 324,539.20, 486,578.40 and 124,782.40 is: 187,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,539.20 : 486,578.40 = 124,782.40 : x
  2. Step 2: Convert to fraction form
    324,539.20/486,578.40 = 124,782.40/x
  3. Step 3: Cross multiply
    324,539.20x = 486,578.40 × 124,782.40
  4. Step 4: Simplify right side
    324,539.20x = 60,716,420,540.16
  5. Step 5: Solve for x
    x = 60,716,420,540.16/324,539.20
  6. Step 6: Final answer
    x = 187,085.01

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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.