Home / 262,645.20-393,708.60-129,416.40

Finding the Fourth Proportional to 262,645.20, 393,708.60 and 129,416.40

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Solution

The fourth proportional to 262,645.20, 393,708.60 and 129,416.40 is: 193,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,645.20 : 393,708.60 = 129,416.40 : x
  2. Step 2: Convert to fraction form
    262,645.20/393,708.60 = 129,416.40/x
  3. Step 3: Cross multiply
    262,645.20x = 393,708.60 × 129,416.40
  4. Step 4: Simplify right side
    262,645.20x = 50,952,349,661.04
  5. Step 5: Solve for x
    x = 50,952,349,661.04/262,645.20
  6. Step 6: Final answer
    x = 193,996.88

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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.