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Finding the Fourth Proportional to 289,396.68, 434,125.14 and 79,034.64

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Solution

The fourth proportional to 289,396.68, 434,125.14 and 79,034.64 is: 118,560.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,396.68 : 434,125.14 = 79,034.64 : x
  2. Step 2: Convert to fraction form
    289,396.68/434,125.14 = 79,034.64/x
  3. Step 3: Cross multiply
    289,396.68x = 434,125.14 × 79,034.64
  4. Step 4: Simplify right side
    289,396.68x = 34,310,924,154.85
  5. Step 5: Solve for x
    x = 34,310,924,154.85/289,396.68
  6. Step 6: Final answer
    x = 118,560.19

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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.