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Finding the Fourth Proportional to 297,578.82, 445,966.46 and 139,453.86

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Solution

The fourth proportional to 297,578.82, 445,966.46 and 139,453.86 is: 208,992.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,578.82 : 445,966.46 = 139,453.86 : x
  2. Step 2: Convert to fraction form
    297,578.82/445,966.46 = 139,453.86/x
  3. Step 3: Cross multiply
    297,578.82x = 445,966.46 × 139,453.86
  4. Step 4: Simplify right side
    297,578.82x = 62,191,744,277.54
  5. Step 5: Solve for x
    x = 62,191,744,277.54/297,578.82
  6. Step 6: Final answer
    x = 208,992.51

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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.