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Finding the Fourth Proportional to 274,448.68, 378,744.32 and 153,603.27

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Solution

The fourth proportional to 274,448.68, 378,744.32 and 153,603.27 is: 211,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,448.68 : 378,744.32 = 153,603.27 : x
  2. Step 2: Convert to fraction form
    274,448.68/378,744.32 = 153,603.27/x
  3. Step 3: Cross multiply
    274,448.68x = 378,744.32 × 153,603.27
  4. Step 4: Simplify right side
    274,448.68x = 58,176,366,429.93
  5. Step 5: Solve for x
    x = 58,176,366,429.93/274,448.68
  6. Step 6: Final answer
    x = 211,975.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.