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Finding the Fourth Proportional to 235,414.80, 324,873.72 and 138,622.86

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Solution

The fourth proportional to 235,414.80, 324,873.72 and 138,622.86 is: 191,300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,414.80 : 324,873.72 = 138,622.86 : x
  2. Step 2: Convert to fraction form
    235,414.80/324,873.72 = 138,622.86/x
  3. Step 3: Cross multiply
    235,414.80x = 324,873.72 × 138,622.86
  4. Step 4: Simplify right side
    235,414.80x = 45,034,924,205.24
  5. Step 5: Solve for x
    x = 45,034,924,205.24/235,414.80
  6. Step 6: Final answer
    x = 191,300.31

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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.