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Finding the Fourth Proportional to 279,136.96, 418,642.54 and 79,452.92

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Solution

The fourth proportional to 279,136.96, 418,642.54 and 79,452.92 is: 119,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,136.96 : 418,642.54 = 79,452.92 : x
  2. Step 2: Convert to fraction form
    279,136.96/418,642.54 = 79,452.92/x
  3. Step 3: Cross multiply
    279,136.96x = 418,642.54 × 79,452.92
  4. Step 4: Simplify right side
    279,136.96x = 33,262,372,239.22
  5. Step 5: Solve for x
    x = 33,262,372,239.22/279,136.96
  6. Step 6: Final answer
    x = 119,161.48

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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.