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Finding the Fourth Proportional to 608,469.80, 913,223.10 and 272,028.20

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Solution

The fourth proportional to 608,469.80, 913,223.10 and 272,028.20 is: 408,274.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,469.80 : 913,223.10 = 272,028.20 : x
  2. Step 2: Convert to fraction form
    608,469.80/913,223.10 = 272,028.20/x
  3. Step 3: Cross multiply
    608,469.80x = 913,223.10 × 272,028.20
  4. Step 4: Simplify right side
    608,469.80x = 248,422,436,091.42
  5. Step 5: Solve for x
    x = 248,422,436,091.42/608,469.80
  6. Step 6: Final answer
    x = 408,274.06

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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.