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Finding the Fourth Proportional to 276,524.80, 381,615.78 and 155,666.32

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Solution

The fourth proportional to 276,524.80, 381,615.78 and 155,666.32 is: 214,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,524.80 : 381,615.78 = 155,666.32 : x
  2. Step 2: Convert to fraction form
    276,524.80/381,615.78 = 155,666.32/x
  3. Step 3: Cross multiply
    276,524.80x = 381,615.78 × 155,666.32
  4. Step 4: Simplify right side
    276,524.80x = 59,404,724,126.53
  5. Step 5: Solve for x
    x = 59,404,724,126.53/276,524.80
  6. Step 6: Final answer
    x = 214,826.03

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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.