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Finding the Fourth Proportional to 286,613.76, 395,524.12 and 159,286.80

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Solution

The fourth proportional to 286,613.76, 395,524.12 and 159,286.80 is: 219,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,613.76 : 395,524.12 = 159,286.80 : x
  2. Step 2: Convert to fraction form
    286,613.76/395,524.12 = 159,286.80/x
  3. Step 3: Cross multiply
    286,613.76x = 395,524.12 × 159,286.80
  4. Step 4: Simplify right side
    286,613.76x = 63,001,771,397.62
  5. Step 5: Solve for x
    x = 63,001,771,397.62/286,613.76
  6. Step 6: Final answer
    x = 219,814.19

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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.