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Finding the Fourth Proportional to 281,561.69, 422,404.82 and 155,136.86

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Solution

The fourth proportional to 281,561.69, 422,404.82 and 155,136.86 is: 232,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,561.69 : 422,404.82 = 155,136.86 : x
  2. Step 2: Convert to fraction form
    281,561.69/422,404.82 = 155,136.86/x
  3. Step 3: Cross multiply
    281,561.69x = 422,404.82 × 155,136.86
  4. Step 4: Simplify right side
    281,561.69x = 65,530,556,701.74
  5. Step 5: Solve for x
    x = 65,530,556,701.74/281,561.69
  6. Step 6: Final answer
    x = 232,739.60

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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.