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Finding the Fourth Proportional to 408,695.53, 613,131.53 and 124,408.31

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Solution

The fourth proportional to 408,695.53, 613,131.53 and 124,408.31 is: 186,639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,695.53 : 613,131.53 = 124,408.31 : x
  2. Step 2: Convert to fraction form
    408,695.53/613,131.53 = 124,408.31/x
  3. Step 3: Cross multiply
    408,695.53x = 613,131.53 × 124,408.31
  4. Step 4: Simplify right side
    408,695.53x = 76,278,656,233.21
  5. Step 5: Solve for x
    x = 76,278,656,233.21/408,695.53
  6. Step 6: Final answer
    x = 186,639.32

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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.