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Finding the Fourth Proportional to 255,751.80, 383,627.70 and 208,512.60

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Solution

The fourth proportional to 255,751.80, 383,627.70 and 208,512.60 is: 312,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,751.80 : 383,627.70 = 208,512.60 : x
  2. Step 2: Convert to fraction form
    255,751.80/383,627.70 = 208,512.60/x
  3. Step 3: Cross multiply
    255,751.80x = 383,627.70 × 208,512.60
  4. Step 4: Simplify right side
    255,751.80x = 79,991,209,159.02
  5. Step 5: Solve for x
    x = 79,991,209,159.02/255,751.80
  6. Step 6: Final answer
    x = 312,768.90

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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.