Home / 276,748.94-381,913.54-155,890.22

Finding the Fourth Proportional to 276,748.94, 381,913.54 and 155,890.22

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Solution

The fourth proportional to 276,748.94, 381,913.54 and 155,890.22 is: 215,128.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,748.94 : 381,913.54 = 155,890.22 : x
  2. Step 2: Convert to fraction form
    276,748.94/381,913.54 = 155,890.22/x
  3. Step 3: Cross multiply
    276,748.94x = 381,913.54 × 155,890.22
  4. Step 4: Simplify right side
    276,748.94x = 59,536,586,960.11
  5. Step 5: Solve for x
    x = 59,536,586,960.11/276,748.94
  6. Step 6: Final answer
    x = 215,128.51

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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.