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Finding the Fourth Proportional to 276,054.92, 380,953.49 and 155,196.74

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Solution

The fourth proportional to 276,054.92, 380,953.49 and 155,196.74 is: 214,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,054.92 : 380,953.49 = 155,196.74 : x
  2. Step 2: Convert to fraction form
    276,054.92/380,953.49 = 155,196.74/x
  3. Step 3: Cross multiply
    276,054.92x = 380,953.49 × 155,196.74
  4. Step 4: Simplify right side
    276,054.92x = 59,122,741,080.00
  5. Step 5: Solve for x
    x = 59,122,741,080.00/276,054.92
  6. Step 6: Final answer
    x = 214,170.21

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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.