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Finding the Fourth Proportional to 490,286.61, 735,008.72 and 170,396.92

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Solution

The fourth proportional to 490,286.61, 735,008.72 and 170,396.92 is: 255,448.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,286.61 : 735,008.72 = 170,396.92 : x
  2. Step 2: Convert to fraction form
    490,286.61/735,008.72 = 170,396.92/x
  3. Step 3: Cross multiply
    490,286.61x = 735,008.72 × 170,396.92
  4. Step 4: Simplify right side
    490,286.61x = 125,243,219,371.64
  5. Step 5: Solve for x
    x = 125,243,219,371.64/490,286.61
  6. Step 6: Final answer
    x = 255,448.99

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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.