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Finding the Fourth Proportional to 289,606.70, 434,539.65 and 131,753.90

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Solution

The fourth proportional to 289,606.70, 434,539.65 and 131,753.90 is: 197,689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,606.70 : 434,539.65 = 131,753.90 : x
  2. Step 2: Convert to fraction form
    289,606.70/434,539.65 = 131,753.90/x
  3. Step 3: Cross multiply
    289,606.70x = 434,539.65 × 131,753.90
  4. Step 4: Simplify right side
    289,606.70x = 57,252,293,592.14
  5. Step 5: Solve for x
    x = 57,252,293,592.14/289,606.70
  6. Step 6: Final answer
    x = 197,689.81

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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.