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Finding the Fourth Proportional to 543,376.80, 815,065.20 and 262,922.40

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Solution

The fourth proportional to 543,376.80, 815,065.20 and 262,922.40 is: 394,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,376.80 : 815,065.20 = 262,922.40 : x
  2. Step 2: Convert to fraction form
    543,376.80/815,065.20 = 262,922.40/x
  3. Step 3: Cross multiply
    543,376.80x = 815,065.20 × 262,922.40
  4. Step 4: Simplify right side
    543,376.80x = 214,298,898,540.48
  5. Step 5: Solve for x
    x = 214,298,898,540.48/543,376.80
  6. Step 6: Final answer
    x = 394,383.60

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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.