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Finding the Fourth Proportional to 289,758.94, 434,633.79 and 79,396.88

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Solution

The fourth proportional to 289,758.94, 434,633.79 and 79,396.88 is: 119,094.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,758.94 : 434,633.79 = 79,396.88 : x
  2. Step 2: Convert to fraction form
    289,758.94/434,633.79 = 79,396.88/x
  3. Step 3: Cross multiply
    289,758.94x = 434,633.79 × 79,396.88
  4. Step 4: Simplify right side
    289,758.94x = 34,508,566,868.58
  5. Step 5: Solve for x
    x = 34,508,566,868.58/289,758.94
  6. Step 6: Final answer
    x = 119,094.05

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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.