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Finding the Fourth Proportional to 325,764.56, 488,647.20 and 89,089.76

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Solution

The fourth proportional to 325,764.56, 488,647.20 and 89,089.76 is: 133,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,764.56 : 488,647.20 = 89,089.76 : x
  2. Step 2: Convert to fraction form
    325,764.56/488,647.20 = 89,089.76/x
  3. Step 3: Cross multiply
    325,764.56x = 488,647.20 × 89,089.76
  4. Step 4: Simplify right side
    325,764.56x = 43,533,461,772.67
  5. Step 5: Solve for x
    x = 43,533,461,772.67/325,764.56
  6. Step 6: Final answer
    x = 133,634.74

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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.