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Finding the Fourth Proportional to 255,970.80, 384,148.20 and 131,247.60

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Solution

The fourth proportional to 255,970.80, 384,148.20 and 131,247.60 is: 196,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,970.80 : 384,148.20 = 131,247.60 : x
  2. Step 2: Convert to fraction form
    255,970.80/384,148.20 = 131,247.60/x
  3. Step 3: Cross multiply
    255,970.80x = 384,148.20 × 131,247.60
  4. Step 4: Simplify right side
    255,970.80x = 50,418,529,294.32
  5. Step 5: Solve for x
    x = 50,418,529,294.32/255,970.80
  6. Step 6: Final answer
    x = 196,969.85

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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.