Home / 215,949.40-323,826.90-82,785.40

Finding the Fourth Proportional to 215,949.40, 323,826.90 and 82,785.40

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Solution

The fourth proportional to 215,949.40, 323,826.90 and 82,785.40 is: 124,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,949.40 : 323,826.90 = 82,785.40 : x
  2. Step 2: Convert to fraction form
    215,949.40/323,826.90 = 82,785.40/x
  3. Step 3: Cross multiply
    215,949.40x = 323,826.90 × 82,785.40
  4. Step 4: Simplify right side
    215,949.40x = 26,808,139,447.26
  5. Step 5: Solve for x
    x = 26,808,139,447.26/215,949.40
  6. Step 6: Final answer
    x = 124,140.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.