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Finding the Fourth Proportional to 276,397.26, 381,423.72 and 155,538.48

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Solution

The fourth proportional to 276,397.26, 381,423.72 and 155,538.48 is: 214,640.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,397.26 : 381,423.72 = 155,538.48 : x
  2. Step 2: Convert to fraction form
    276,397.26/381,423.72 = 155,538.48/x
  3. Step 3: Cross multiply
    276,397.26x = 381,423.72 × 155,538.48
  4. Step 4: Simplify right side
    276,397.26x = 59,326,065,644.75
  5. Step 5: Solve for x
    x = 59,326,065,644.75/276,397.26
  6. Step 6: Final answer
    x = 214,640.57

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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.