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Finding the Fourth Proportional to 301,639.67, 451,770.47 and 143,979.11

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Solution

The fourth proportional to 301,639.67, 451,770.47 and 143,979.11 is: 215,639.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,639.67 : 451,770.47 = 143,979.11 : x
  2. Step 2: Convert to fraction form
    301,639.67/451,770.47 = 143,979.11/x
  3. Step 3: Cross multiply
    301,639.67x = 451,770.47 × 143,979.11
  4. Step 4: Simplify right side
    301,639.67x = 65,045,509,474.99
  5. Step 5: Solve for x
    x = 65,045,509,474.99/301,639.67
  6. Step 6: Final answer
    x = 215,639.77

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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.