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Finding the Fourth Proportional to 327,165.40, 490,748.10 and 322,499.80

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Solution

The fourth proportional to 327,165.40, 490,748.10 and 322,499.80 is: 483,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,165.40 : 490,748.10 = 322,499.80 : x
  2. Step 2: Convert to fraction form
    327,165.40/490,748.10 = 322,499.80/x
  3. Step 3: Cross multiply
    327,165.40x = 490,748.10 × 322,499.80
  4. Step 4: Simplify right side
    327,165.40x = 158,266,164,100.38
  5. Step 5: Solve for x
    x = 158,266,164,100.38/327,165.40
  6. Step 6: Final answer
    x = 483,749.70

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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.