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Finding the Fourth Proportional to 356,383.20, 534,142.80 and 206,335.20

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Solution

The fourth proportional to 356,383.20, 534,142.80 and 206,335.20 is: 309,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,383.20 : 534,142.80 = 206,335.20 : x
  2. Step 2: Convert to fraction form
    356,383.20/534,142.80 = 206,335.20/x
  3. Step 3: Cross multiply
    356,383.20x = 534,142.80 × 206,335.20
  4. Step 4: Simplify right side
    356,383.20x = 110,212,461,466.56
  5. Step 5: Solve for x
    x = 110,212,461,466.56/356,383.20
  6. Step 6: Final answer
    x = 309,252.68

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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.