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Finding the Fourth Proportional to 250,145.98, 345,198.98 and 135,421.59

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Solution

The fourth proportional to 250,145.98, 345,198.98 and 135,421.59 is: 186,880.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,145.98 : 345,198.98 = 135,421.59 : x
  2. Step 2: Convert to fraction form
    250,145.98/345,198.98 = 135,421.59/x
  3. Step 3: Cross multiply
    250,145.98x = 345,198.98 × 135,421.59
  4. Step 4: Simplify right side
    250,145.98x = 46,747,394,060.87
  5. Step 5: Solve for x
    x = 46,747,394,060.87/250,145.98
  6. Step 6: Final answer
    x = 186,880.45

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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.