Home / 812,114.40-1,218,171.60-251,148.90

Finding the Fourth Proportional to 812,114.40, 1,218,171.60 and 251,148.90

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Solution

The fourth proportional to 812,114.40, 1,218,171.60 and 251,148.90 is: 376,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,114.40 : 1,218,171.60 = 251,148.90 : x
  2. Step 2: Convert to fraction form
    812,114.40/1,218,171.60 = 251,148.90/x
  3. Step 3: Cross multiply
    812,114.40x = 1,218,171.60 × 251,148.90
  4. Step 4: Simplify right side
    812,114.40x = 305,942,457,351.24
  5. Step 5: Solve for x
    x = 305,942,457,351.24/812,114.40
  6. Step 6: Final answer
    x = 376,723.35

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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.