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Finding the Fourth Proportional to 276,174.65, 381,117.39 and 155,315.90

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Solution

The fourth proportional to 276,174.65, 381,117.39 and 155,315.90 is: 214,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,174.65 : 381,117.39 = 155,315.90 : x
  2. Step 2: Convert to fraction form
    276,174.65/381,117.39 = 155,315.90/x
  3. Step 3: Cross multiply
    276,174.65x = 381,117.39 × 155,315.90
  4. Step 4: Simplify right side
    276,174.65x = 59,193,588,527.91
  5. Step 5: Solve for x
    x = 59,193,588,527.91/276,174.65
  6. Step 6: Final answer
    x = 214,333.90

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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.