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Finding the Fourth Proportional to 808,375.10, 1,213,000.05 and 359,165.30

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Solution

The fourth proportional to 808,375.10, 1,213,000.05 and 359,165.30 is: 538,942.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,375.10 : 1,213,000.05 = 359,165.30 : x
  2. Step 2: Convert to fraction form
    808,375.10/1,213,000.05 = 359,165.30/x
  3. Step 3: Cross multiply
    808,375.10x = 1,213,000.05 × 359,165.30
  4. Step 4: Simplify right side
    808,375.10x = 435,667,526,858.27
  5. Step 5: Solve for x
    x = 435,667,526,858.27/808,375.10
  6. Step 6: Final answer
    x = 538,942.29

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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.