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Finding the Fourth Proportional to 321,957.79, 482,781.16 and 188,881.27

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Solution

The fourth proportional to 321,957.79, 482,781.16 and 188,881.27 is: 283,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,957.79 : 482,781.16 = 188,881.27 : x
  2. Step 2: Convert to fraction form
    321,957.79/482,781.16 = 188,881.27/x
  3. Step 3: Cross multiply
    321,957.79x = 482,781.16 × 188,881.27
  4. Step 4: Simplify right side
    321,957.79x = 91,188,317,662.02
  5. Step 5: Solve for x
    x = 91,188,317,662.02/321,957.79
  6. Step 6: Final answer
    x = 283,230.66

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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.