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Finding the Fourth Proportional to 454,904.88, 682,508.32 and 139,364.88

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Solution

The fourth proportional to 454,904.88, 682,508.32 and 139,364.88 is: 209,093.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,904.88 : 682,508.32 = 139,364.88 : x
  2. Step 2: Convert to fraction form
    454,904.88/682,508.32 = 139,364.88/x
  3. Step 3: Cross multiply
    454,904.88x = 682,508.32 × 139,364.88
  4. Step 4: Simplify right side
    454,904.88x = 95,117,690,115.80
  5. Step 5: Solve for x
    x = 95,117,690,115.80/454,904.88
  6. Step 6: Final answer
    x = 209,093.58

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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.