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Finding the Fourth Proportional to 274,835.52, 379,247.52 and 155,603.52

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Solution

The fourth proportional to 274,835.52, 379,247.52 and 155,603.52 is: 214,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,835.52 : 379,247.52 = 155,603.52 : x
  2. Step 2: Convert to fraction form
    274,835.52/379,247.52 = 155,603.52/x
  3. Step 3: Cross multiply
    274,835.52x = 379,247.52 × 155,603.52
  4. Step 4: Simplify right side
    274,835.52x = 59,012,249,063.27
  5. Step 5: Solve for x
    x = 59,012,249,063.27/274,835.52
  6. Step 6: Final answer
    x = 214,718.42

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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.