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Finding the Fourth Proportional to 276,498.54, 381,491.55 and 155,632.77

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Solution

The fourth proportional to 276,498.54, 381,491.55 and 155,632.77 is: 214,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,498.54 : 381,491.55 = 155,632.77 : x
  2. Step 2: Convert to fraction form
    276,498.54/381,491.55 = 155,632.77/x
  3. Step 3: Cross multiply
    276,498.54x = 381,491.55 × 155,632.77
  4. Step 4: Simplify right side
    276,498.54x = 59,372,586,658.09
  5. Step 5: Solve for x
    x = 59,372,586,658.09/276,498.54
  6. Step 6: Final answer
    x = 214,730.20

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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.