Home / 215,828.40-323,742.60-131,847.60

Finding the Fourth Proportional to 215,828.40, 323,742.60 and 131,847.60

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Solution

The fourth proportional to 215,828.40, 323,742.60 and 131,847.60 is: 197,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,828.40 : 323,742.60 = 131,847.60 : x
  2. Step 2: Convert to fraction form
    215,828.40/323,742.60 = 131,847.60/x
  3. Step 3: Cross multiply
    215,828.40x = 323,742.60 × 131,847.60
  4. Step 4: Simplify right side
    215,828.40x = 42,684,684,827.76
  5. Step 5: Solve for x
    x = 42,684,684,827.76/215,828.40
  6. Step 6: Final answer
    x = 197,771.40

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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.