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Finding the Fourth Proportional to 510,392.97, 765,589.46 and 136,406.25

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Solution

The fourth proportional to 510,392.97, 765,589.46 and 136,406.25 is: 204,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,392.97 : 765,589.46 = 136,406.25 : x
  2. Step 2: Convert to fraction form
    510,392.97/765,589.46 = 136,406.25/x
  3. Step 3: Cross multiply
    510,392.97x = 765,589.46 × 136,406.25
  4. Step 4: Simplify right side
    510,392.97x = 104,431,186,596.09
  5. Step 5: Solve for x
    x = 104,431,186,596.09/510,392.97
  6. Step 6: Final answer
    x = 204,609.38

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Double scale
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Similar ratio
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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.