Home / 276,789.22-381,890.10-155,888.22

Finding the Fourth Proportional to 276,789.22, 381,890.10 and 155,888.22

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Solution

The fourth proportional to 276,789.22, 381,890.10 and 155,888.22 is: 215,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,789.22 : 381,890.10 = 155,888.22 : x
  2. Step 2: Convert to fraction form
    276,789.22/381,890.10 = 155,888.22/x
  3. Step 3: Cross multiply
    276,789.22x = 381,890.10 × 155,888.22
  4. Step 4: Simplify right side
    276,789.22x = 59,532,167,924.62
  5. Step 5: Solve for x
    x = 59,532,167,924.62/276,789.22
  6. Step 6: Final answer
    x = 215,081.24

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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.