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Finding the Fourth Proportional to 235,613.50, 325,213.48 and 138,873.58

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Solution

The fourth proportional to 235,613.50, 325,213.48 and 138,873.58 is: 191,684.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,613.50 : 325,213.48 = 138,873.58 : x
  2. Step 2: Convert to fraction form
    235,613.50/325,213.48 = 138,873.58/x
  3. Step 3: Cross multiply
    235,613.50x = 325,213.48 × 138,873.58
  4. Step 4: Simplify right side
    235,613.50x = 45,163,560,231.86
  5. Step 5: Solve for x
    x = 45,163,560,231.86/235,613.50
  6. Step 6: Final answer
    x = 191,684.94

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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.