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Finding the Fourth Proportional to 276,048.15, 380,944.19 and 155,189.98

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Solution

The fourth proportional to 276,048.15, 380,944.19 and 155,189.98 is: 214,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,048.15 : 380,944.19 = 155,189.98 : x
  2. Step 2: Convert to fraction form
    276,048.15/380,944.19 = 155,189.98/x
  3. Step 3: Cross multiply
    276,048.15x = 380,944.19 × 155,189.98
  4. Step 4: Simplify right side
    276,048.15x = 59,118,719,512.09
  5. Step 5: Solve for x
    x = 59,118,719,512.09/276,048.15
  6. Step 6: Final answer
    x = 214,160.90

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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.