Home / 378,972.14-568,381.32-139,004.36

Finding the Fourth Proportional to 378,972.14, 568,381.32 and 139,004.36

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Solution

The fourth proportional to 378,972.14, 568,381.32 and 139,004.36 is: 208,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,972.14 : 568,381.32 = 139,004.36 : x
  2. Step 2: Convert to fraction form
    378,972.14/568,381.32 = 139,004.36/x
  3. Step 3: Cross multiply
    378,972.14x = 568,381.32 × 139,004.36
  4. Step 4: Simplify right side
    378,972.14x = 79,007,483,802.84
  5. Step 5: Solve for x
    x = 79,007,483,802.84/378,972.14
  6. Step 6: Final answer
    x = 208,478.34

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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.