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Finding the Fourth Proportional to 289,672.68, 434,629.05 and 156,396.27

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Solution

The fourth proportional to 289,672.68, 434,629.05 and 156,396.27 is: 234,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,672.68 : 434,629.05 = 156,396.27 : x
  2. Step 2: Convert to fraction form
    289,672.68/434,629.05 = 156,396.27/x
  3. Step 3: Cross multiply
    289,672.68x = 434,629.05 × 156,396.27
  4. Step 4: Simplify right side
    289,672.68x = 67,974,362,253.64
  5. Step 5: Solve for x
    x = 67,974,362,253.64/289,672.68
  6. Step 6: Final answer
    x = 234,659.21

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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.