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Finding the Fourth Proportional to 520,200.26, 780,300.40 and 126,216.26

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Solution

The fourth proportional to 520,200.26, 780,300.40 and 126,216.26 is: 189,324.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.26 : 780,300.40 = 126,216.26 : x
  2. Step 2: Convert to fraction form
    520,200.26/780,300.40 = 126,216.26/x
  3. Step 3: Cross multiply
    520,200.26x = 780,300.40 × 126,216.26
  4. Step 4: Simplify right side
    520,200.26x = 98,486,598,164.50
  5. Step 5: Solve for x
    x = 98,486,598,164.50/520,200.26
  6. Step 6: Final answer
    x = 189,324.39

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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.