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Finding the Fourth Proportional to 289,257.70, 433,846.55 and 89,715.30

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Solution

The fourth proportional to 289,257.70, 433,846.55 and 89,715.30 is: 134,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,257.70 : 433,846.55 = 89,715.30 : x
  2. Step 2: Convert to fraction form
    289,257.70/433,846.55 = 89,715.30/x
  3. Step 3: Cross multiply
    289,257.70x = 433,846.55 × 89,715.30
  4. Step 4: Simplify right side
    289,257.70x = 38,922,673,387.22
  5. Step 5: Solve for x
    x = 38,922,673,387.22/289,257.70
  6. Step 6: Final answer
    x = 134,560.54

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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.