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Finding the Fourth Proportional to 272,396.12, 407,399.22 and 242,620.11

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Solution

The fourth proportional to 272,396.12, 407,399.22 and 242,620.11 is: 362,865.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,396.12 : 407,399.22 = 242,620.11 : x
  2. Step 2: Convert to fraction form
    272,396.12/407,399.22 = 242,620.11/x
  3. Step 3: Cross multiply
    272,396.12x = 407,399.22 × 242,620.11
  4. Step 4: Simplify right side
    272,396.12x = 98,843,243,570.31
  5. Step 5: Solve for x
    x = 98,843,243,570.31/272,396.12
  6. Step 6: Final answer
    x = 362,865.83

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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.