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Finding the Fourth Proportional to 276,179.65, 381,124.30 and 155,320.90

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Solution

The fourth proportional to 276,179.65, 381,124.30 and 155,320.90 is: 214,340.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,179.65 : 381,124.30 = 155,320.90 : x
  2. Step 2: Convert to fraction form
    276,179.65/381,124.30 = 155,320.90/x
  3. Step 3: Cross multiply
    276,179.65x = 381,124.30 × 155,320.90
  4. Step 4: Simplify right side
    276,179.65x = 59,196,569,287.87
  5. Step 5: Solve for x
    x = 59,196,569,287.87/276,179.65
  6. Step 6: Final answer
    x = 214,340.81

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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.