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Finding the Fourth Proportional to 255,285.43, 383,164.55 and 129,014.53

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Solution

The fourth proportional to 255,285.43, 383,164.55 and 129,014.53 is: 193,641.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,285.43 : 383,164.55 = 129,014.53 : x
  2. Step 2: Convert to fraction form
    255,285.43/383,164.55 = 129,014.53/x
  3. Step 3: Cross multiply
    255,285.43x = 383,164.55 × 129,014.53
  4. Step 4: Simplify right side
    255,285.43x = 49,433,794,330.91
  5. Step 5: Solve for x
    x = 49,433,794,330.91/255,285.43
  6. Step 6: Final answer
    x = 193,641.27

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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.