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Finding the Fourth Proportional to 255,364.55, 382,780.73 and 142,879.85

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Solution

The fourth proportional to 255,364.55, 382,780.73 and 142,879.85 is: 214,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,364.55 : 382,780.73 = 142,879.85 : x
  2. Step 2: Convert to fraction form
    255,364.55/382,780.73 = 142,879.85/x
  3. Step 3: Cross multiply
    255,364.55x = 382,780.73 × 142,879.85
  4. Step 4: Simplify right side
    255,364.55x = 54,691,650,656.99
  5. Step 5: Solve for x
    x = 54,691,650,656.99/255,364.55
  6. Step 6: Final answer
    x = 214,170.89

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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.