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Finding the Fourth Proportional to 278,504.55, 384,335.95 and 151,180.15

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Solution

The fourth proportional to 278,504.55, 384,335.95 and 151,180.15 is: 208,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,504.55 : 384,335.95 = 151,180.15 : x
  2. Step 2: Convert to fraction form
    278,504.55/384,335.95 = 151,180.15/x
  3. Step 3: Cross multiply
    278,504.55x = 384,335.95 × 151,180.15
  4. Step 4: Simplify right side
    278,504.55x = 58,103,966,571.39
  5. Step 5: Solve for x
    x = 58,103,966,571.39/278,504.55
  6. Step 6: Final answer
    x = 208,628.43

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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.