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Finding the Fourth Proportional to 255,168.56, 382,834.80 and 77,709.92

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Solution

The fourth proportional to 255,168.56, 382,834.80 and 77,709.92 is: 116,589.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,168.56 : 382,834.80 = 77,709.92 : x
  2. Step 2: Convert to fraction form
    255,168.56/382,834.80 = 77,709.92/x
  3. Step 3: Cross multiply
    255,168.56x = 382,834.80 × 77,709.92
  4. Step 4: Simplify right side
    255,168.56x = 29,750,061,681.22
  5. Step 5: Solve for x
    x = 29,750,061,681.22/255,168.56
  6. Step 6: Final answer
    x = 116,589.84

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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.