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Finding the Fourth Proportional to 289,498.62, 434,234.03 and 79,137.03

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Solution

The fourth proportional to 289,498.62, 434,234.03 and 79,137.03 is: 118,701.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,498.62 : 434,234.03 = 79,137.03 : x
  2. Step 2: Convert to fraction form
    289,498.62/434,234.03 = 79,137.03/x
  3. Step 3: Cross multiply
    289,498.62x = 434,234.03 × 79,137.03
  4. Step 4: Simplify right side
    289,498.62x = 34,363,991,063.45
  5. Step 5: Solve for x
    x = 34,363,991,063.45/289,498.62
  6. Step 6: Final answer
    x = 118,701.74

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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.