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Finding the Fourth Proportional to 356,444.27, 534,624.79 and 143,203.56

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Solution

The fourth proportional to 356,444.27, 534,624.79 and 143,203.56 is: 214,788.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,444.27 : 534,624.79 = 143,203.56 : x
  2. Step 2: Convert to fraction form
    356,444.27/534,624.79 = 143,203.56/x
  3. Step 3: Cross multiply
    356,444.27x = 534,624.79 × 143,203.56
  4. Step 4: Simplify right side
    356,444.27x = 76,560,175,837.04
  5. Step 5: Solve for x
    x = 76,560,175,837.04/356,444.27
  6. Step 6: Final answer
    x = 214,788.63

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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.