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Finding the Fourth Proportional to 356,305.37, 534,458.04 and 90,065.88

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Solution

The fourth proportional to 356,305.37, 534,458.04 and 90,065.88 is: 135,098.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,305.37 : 534,458.04 = 90,065.88 : x
  2. Step 2: Convert to fraction form
    356,305.37/534,458.04 = 90,065.88/x
  3. Step 3: Cross multiply
    356,305.37x = 534,458.04 × 90,065.88
  4. Step 4: Simplify right side
    356,305.37x = 48,136,431,023.39
  5. Step 5: Solve for x
    x = 48,136,431,023.39/356,305.37
  6. Step 6: Final answer
    x = 135,098.81

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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.