Home / 276,024.78-380,905.38-155,171.16

Finding the Fourth Proportional to 276,024.78, 380,905.38 and 155,171.16

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Solution

The fourth proportional to 276,024.78, 380,905.38 and 155,171.16 is: 214,131.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,024.78 : 380,905.38 = 155,171.16 : x
  2. Step 2: Convert to fraction form
    276,024.78/380,905.38 = 155,171.16/x
  3. Step 3: Cross multiply
    276,024.78x = 380,905.38 × 155,171.16
  4. Step 4: Simplify right side
    276,024.78x = 59,105,529,664.84
  5. Step 5: Solve for x
    x = 59,105,529,664.84/276,024.78
  6. Step 6: Final answer
    x = 214,131.24

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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.