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Finding the Fourth Proportional to 289,354.20, 433,872.74 and 89,619.13

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Solution

The fourth proportional to 289,354.20, 433,872.74 and 89,619.13 is: 134,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,354.20 : 433,872.74 = 89,619.13 : x
  2. Step 2: Convert to fraction form
    289,354.20/433,872.74 = 89,619.13/x
  3. Step 3: Cross multiply
    289,354.20x = 433,872.74 × 89,619.13
  4. Step 4: Simplify right side
    289,354.20x = 38,883,297,751.80
  5. Step 5: Solve for x
    x = 38,883,297,751.80/289,354.20
  6. Step 6: Final answer
    x = 134,379.59

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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.