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Finding the Fourth Proportional to 386,266.40, 579,399.60 and 327,363.20

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Solution

The fourth proportional to 386,266.40, 579,399.60 and 327,363.20 is: 491,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,266.40 : 579,399.60 = 327,363.20 : x
  2. Step 2: Convert to fraction form
    386,266.40/579,399.60 = 327,363.20/x
  3. Step 3: Cross multiply
    386,266.40x = 579,399.60 × 327,363.20
  4. Step 4: Simplify right side
    386,266.40x = 189,674,107,134.72
  5. Step 5: Solve for x
    x = 189,674,107,134.72/386,266.40
  6. Step 6: Final answer
    x = 491,044.80

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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.