Home / 276,686.40-381,811.68-163,519.68

Finding the Fourth Proportional to 276,686.40, 381,811.68 and 163,519.68

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Solution

The fourth proportional to 276,686.40, 381,811.68 and 163,519.68 is: 225,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,686.40 : 381,811.68 = 163,519.68 : x
  2. Step 2: Convert to fraction form
    276,686.40/381,811.68 = 163,519.68/x
  3. Step 3: Cross multiply
    276,686.40x = 381,811.68 × 163,519.68
  4. Step 4: Simplify right side
    276,686.40x = 62,433,723,733.86
  5. Step 5: Solve for x
    x = 62,433,723,733.86/276,686.40
  6. Step 6: Final answer
    x = 225,647.97

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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.