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Finding the Fourth Proportional to 278,503.55, 384,334.57 and 151,179.15

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Solution

The fourth proportional to 278,503.55, 384,334.57 and 151,179.15 is: 208,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,503.55 : 384,334.57 = 151,179.15 : x
  2. Step 2: Convert to fraction form
    278,503.55/384,334.57 = 151,179.15/x
  3. Step 3: Cross multiply
    278,503.55x = 384,334.57 × 151,179.15
  4. Step 4: Simplify right side
    278,503.55x = 58,103,373,608.22
  5. Step 5: Solve for x
    x = 58,103,373,608.22/278,503.55
  6. Step 6: Final answer
    x = 208,627.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.