Home / 276,178.65-381,122.92-155,319.90

Finding the Fourth Proportional to 276,178.65, 381,122.92 and 155,319.90

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Solution

The fourth proportional to 276,178.65, 381,122.92 and 155,319.90 is: 214,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,178.65 : 381,122.92 = 155,319.90 : x
  2. Step 2: Convert to fraction form
    276,178.65/381,122.92 = 155,319.90/x
  3. Step 3: Cross multiply
    276,178.65x = 381,122.92 × 155,319.90
  4. Step 4: Simplify right side
    276,178.65x = 59,195,973,822.11
  5. Step 5: Solve for x
    x = 59,195,973,822.11/276,178.65
  6. Step 6: Final answer
    x = 214,339.43

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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.