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Finding the Fourth Proportional to 255,934.47, 384,137.31 and 129,662.56

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Solution

The fourth proportional to 255,934.47, 384,137.31 and 129,662.56 is: 194,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,934.47 : 384,137.31 = 129,662.56 : x
  2. Step 2: Convert to fraction form
    255,934.47/384,137.31 = 129,662.56/x
  3. Step 3: Cross multiply
    255,934.47x = 384,137.31 × 129,662.56
  4. Step 4: Simplify right side
    255,934.47x = 49,808,225,085.43
  5. Step 5: Solve for x
    x = 49,808,225,085.43/255,934.47
  6. Step 6: Final answer
    x = 194,613.20

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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.