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Finding the Fourth Proportional to 276,173.84, 381,133.68 and 155,353.16

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Solution

The fourth proportional to 276,173.84, 381,133.68 and 155,353.16 is: 214,395.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,173.84 : 381,133.68 = 155,353.16 : x
  2. Step 2: Convert to fraction form
    276,173.84/381,133.68 = 155,353.16/x
  3. Step 3: Cross multiply
    276,173.84x = 381,133.68 × 155,353.16
  4. Step 4: Simplify right side
    276,173.84x = 59,210,321,570.43
  5. Step 5: Solve for x
    x = 59,210,321,570.43/276,173.84
  6. Step 6: Final answer
    x = 214,395.11

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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.