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Finding the Fourth Proportional to 439,395.36, 659,093.04 and 139,874.64

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Solution

The fourth proportional to 439,395.36, 659,093.04 and 139,874.64 is: 209,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,395.36 : 659,093.04 = 139,874.64 : x
  2. Step 2: Convert to fraction form
    439,395.36/659,093.04 = 139,874.64/x
  3. Step 3: Cross multiply
    439,395.36x = 659,093.04 × 139,874.64
  4. Step 4: Simplify right side
    439,395.36x = 92,190,401,696.51
  5. Step 5: Solve for x
    x = 92,190,401,696.51/439,395.36
  6. Step 6: Final answer
    x = 209,811.96

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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.