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Finding the Fourth Proportional to 403,450.80, 605,176.20 and 359,905.20

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Solution

The fourth proportional to 403,450.80, 605,176.20 and 359,905.20 is: 539,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,450.80 : 605,176.20 = 359,905.20 : x
  2. Step 2: Convert to fraction form
    403,450.80/605,176.20 = 359,905.20/x
  3. Step 3: Cross multiply
    403,450.80x = 605,176.20 × 359,905.20
  4. Step 4: Simplify right side
    403,450.80x = 217,806,061,296.24
  5. Step 5: Solve for x
    x = 217,806,061,296.24/403,450.80
  6. Step 6: Final answer
    x = 539,857.80

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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.