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Finding the Fourth Proportional to 276,049.65, 380,946.26 and 155,191.47

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Solution

The fourth proportional to 276,049.65, 380,946.26 and 155,191.47 is: 214,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,049.65 : 380,946.26 = 155,191.47 : x
  2. Step 2: Convert to fraction form
    276,049.65/380,946.26 = 155,191.47/x
  3. Step 3: Cross multiply
    276,049.65x = 380,946.26 × 155,191.47
  4. Step 4: Simplify right side
    276,049.65x = 59,119,609,304.44
  5. Step 5: Solve for x
    x = 59,119,609,304.44/276,049.65
  6. Step 6: Final answer
    x = 214,162.96

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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.