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Finding the Fourth Proportional to 289,874.56, 434,738.88 and 112,320.64

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Solution

The fourth proportional to 289,874.56, 434,738.88 and 112,320.64 is: 168,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,874.56 : 434,738.88 = 112,320.64 : x
  2. Step 2: Convert to fraction form
    289,874.56/434,738.88 = 112,320.64/x
  3. Step 3: Cross multiply
    289,874.56x = 434,738.88 × 112,320.64
  4. Step 4: Simplify right side
    289,874.56x = 48,830,149,234.48
  5. Step 5: Solve for x
    x = 48,830,149,234.48/289,874.56
  6. Step 6: Final answer
    x = 168,452.69

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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.