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Finding the Fourth Proportional to 322,581.60, 482,950.80 and 285,717.60

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Solution

The fourth proportional to 322,581.60, 482,950.80 and 285,717.60 is: 427,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,581.60 : 482,950.80 = 285,717.60 : x
  2. Step 2: Convert to fraction form
    322,581.60/482,950.80 = 285,717.60/x
  3. Step 3: Cross multiply
    322,581.60x = 482,950.80 × 285,717.60
  4. Step 4: Simplify right side
    322,581.60x = 137,987,543,494.08
  5. Step 5: Solve for x
    x = 137,987,543,494.08/322,581.60
  6. Step 6: Final answer
    x = 427,760.12

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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.