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Finding the Fourth Proportional to 351,357.73, 485,690.85 and 313,492.57

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Solution

The fourth proportional to 351,357.73, 485,690.85 and 313,492.57 is: 433,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,357.73 : 485,690.85 = 313,492.57 : x
  2. Step 2: Convert to fraction form
    351,357.73/485,690.85 = 313,492.57/x
  3. Step 3: Cross multiply
    351,357.73x = 485,690.85 × 313,492.57
  4. Step 4: Simplify right side
    351,357.73x = 152,260,472,791.99
  5. Step 5: Solve for x
    x = 152,260,472,791.99/351,357.73
  6. Step 6: Final answer
    x = 433,348.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.