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Finding the Fourth Proportional to 251,999.22, 378,072.63 and 74,510.85

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Solution

The fourth proportional to 251,999.22, 378,072.63 and 74,510.85 is: 111,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,999.22 : 378,072.63 = 74,510.85 : x
  2. Step 2: Convert to fraction form
    251,999.22/378,072.63 = 74,510.85/x
  3. Step 3: Cross multiply
    251,999.22x = 378,072.63 × 74,510.85
  4. Step 4: Simplify right side
    251,999.22x = 28,170,513,023.04
  5. Step 5: Solve for x
    x = 28,170,513,023.04/251,999.22
  6. Step 6: Final answer
    x = 111,788.10

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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.