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Finding the Fourth Proportional to 356,045.22, 534,028.01 and 89,805.78

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Solution

The fourth proportional to 356,045.22, 534,028.01 and 89,805.78 is: 134,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,045.22 : 534,028.01 = 89,805.78 : x
  2. Step 2: Convert to fraction form
    356,045.22/534,028.01 = 89,805.78/x
  3. Step 3: Cross multiply
    356,045.22x = 534,028.01 × 89,805.78
  4. Step 4: Simplify right side
    356,045.22x = 47,958,801,530.87
  5. Step 5: Solve for x
    x = 47,958,801,530.87/356,045.22
  6. Step 6: Final answer
    x = 134,698.62

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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.