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Finding the Fourth Proportional to 276,049.15, 380,945.57 and 155,190.98

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Solution

The fourth proportional to 276,049.15, 380,945.57 and 155,190.98 is: 214,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,049.15 : 380,945.57 = 155,190.98 : x
  2. Step 2: Convert to fraction form
    276,049.15/380,945.57 = 155,190.98/x
  3. Step 3: Cross multiply
    276,049.15x = 380,945.57 × 155,190.98
  4. Step 4: Simplify right side
    276,049.15x = 59,119,316,334.96
  5. Step 5: Solve for x
    x = 59,119,316,334.96/276,049.15
  6. Step 6: Final answer
    x = 214,162.28

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1.5x scale

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.