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Finding the Fourth Proportional to 276,038.28, 380,932.88 and 155,179.80

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Solution

The fourth proportional to 276,038.28, 380,932.88 and 155,179.80 is: 214,148.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,038.28 : 380,932.88 = 155,179.80 : x
  2. Step 2: Convert to fraction form
    276,038.28/380,932.88 = 155,179.80/x
  3. Step 3: Cross multiply
    276,038.28x = 380,932.88 × 155,179.80
  4. Step 4: Simplify right side
    276,038.28x = 59,113,087,355.93
  5. Step 5: Solve for x
    x = 59,113,087,355.93/276,038.28
  6. Step 6: Final answer
    x = 214,148.15

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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.