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Finding the Fourth Proportional to 253,517.92, 380,153.86 and 127,103.85

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Solution

The fourth proportional to 253,517.92, 380,153.86 and 127,103.85 is: 190,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,517.92 : 380,153.86 = 127,103.85 : x
  2. Step 2: Convert to fraction form
    253,517.92/380,153.86 = 127,103.85/x
  3. Step 3: Cross multiply
    253,517.92x = 380,153.86 × 127,103.85
  4. Step 4: Simplify right side
    253,517.92x = 48,319,018,880.60
  5. Step 5: Solve for x
    x = 48,319,018,880.60/253,517.92
  6. Step 6: Final answer
    x = 190,594.10

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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.