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Finding the Fourth Proportional to 297,317.82, 445,972.85 and 72,680.23

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Solution

The fourth proportional to 297,317.82, 445,972.85 and 72,680.23 is: 109,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,317.82 : 445,972.85 = 72,680.23 : x
  2. Step 2: Convert to fraction form
    297,317.82/445,972.85 = 72,680.23/x
  3. Step 3: Cross multiply
    297,317.82x = 445,972.85 × 72,680.23
  4. Step 4: Simplify right side
    297,317.82x = 32,413,408,948.35
  5. Step 5: Solve for x
    x = 32,413,408,948.35/297,317.82
  6. Step 6: Final answer
    x = 109,019.40

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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.