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Finding the Fourth Proportional to 255,750.96, 383,863.05 and 129,479.93

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Solution

The fourth proportional to 255,750.96, 383,863.05 and 129,479.93 is: 194,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,750.96 : 383,863.05 = 129,479.93 : x
  2. Step 2: Convert to fraction form
    255,750.96/383,863.05 = 129,479.93/x
  3. Step 3: Cross multiply
    255,750.96x = 383,863.05 × 129,479.93
  4. Step 4: Simplify right side
    255,750.96x = 49,702,558,924.27
  5. Step 5: Solve for x
    x = 49,702,558,924.27/255,750.96
  6. Step 6: Final answer
    x = 194,339.68

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1.5x scale

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.