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Finding the Fourth Proportional to 356,615.45, 534,922.22 and 90,375.20

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Solution

The fourth proportional to 356,615.45, 534,922.22 and 90,375.20 is: 135,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,615.45 : 534,922.22 = 90,375.20 : x
  2. Step 2: Convert to fraction form
    356,615.45/534,922.22 = 90,375.20/x
  3. Step 3: Cross multiply
    356,615.45x = 534,922.22 × 90,375.20
  4. Step 4: Simplify right side
    356,615.45x = 48,343,699,490.46
  5. Step 5: Solve for x
    x = 48,343,699,490.46/356,615.45
  6. Step 6: Final answer
    x = 135,562.55

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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.