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Finding the Fourth Proportional to 510,136.40, 765,204.60 and 131,056.40

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Solution

The fourth proportional to 510,136.40, 765,204.60 and 131,056.40 is: 196,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,136.40 : 765,204.60 = 131,056.40 : x
  2. Step 2: Convert to fraction form
    510,136.40/765,204.60 = 131,056.40/x
  3. Step 3: Cross multiply
    510,136.40x = 765,204.60 × 131,056.40
  4. Step 4: Simplify right side
    510,136.40x = 100,284,960,139.44
  5. Step 5: Solve for x
    x = 100,284,960,139.44/510,136.40
  6. Step 6: Final answer
    x = 196,584.60

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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.