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Finding the Fourth Proportional to 279,323.07, 385,474.53 and 158,469.45

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Solution

The fourth proportional to 279,323.07, 385,474.53 and 158,469.45 is: 218,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,323.07 : 385,474.53 = 158,469.45 : x
  2. Step 2: Convert to fraction form
    279,323.07/385,474.53 = 158,469.45/x
  3. Step 3: Cross multiply
    279,323.07x = 385,474.53 × 158,469.45
  4. Step 4: Simplify right side
    279,323.07x = 61,085,936,758.11
  5. Step 5: Solve for x
    x = 61,085,936,758.11/279,323.07
  6. Step 6: Final answer
    x = 218,692.77

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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.