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Finding the Fourth Proportional to 289,459.89, 434,231.90 and 89,796.19

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Solution

The fourth proportional to 289,459.89, 434,231.90 and 89,796.19 is: 134,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,459.89 : 434,231.90 = 89,796.19 : x
  2. Step 2: Convert to fraction form
    289,459.89/434,231.90 = 89,796.19/x
  3. Step 3: Cross multiply
    289,459.89x = 434,231.90 × 89,796.19
  4. Step 4: Simplify right side
    289,459.89x = 38,992,370,196.46
  5. Step 5: Solve for x
    x = 38,992,370,196.46/289,459.89
  6. Step 6: Final answer
    x = 134,707.33

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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.