Home / 236,211.60-325,973.96-128,782.40

Finding the Fourth Proportional to 236,211.60, 325,973.96 and 128,782.40

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Solution

The fourth proportional to 236,211.60, 325,973.96 and 128,782.40 is: 177,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,211.60 : 325,973.96 = 128,782.40 : x
  2. Step 2: Convert to fraction form
    236,211.60/325,973.96 = 128,782.40/x
  3. Step 3: Cross multiply
    236,211.60x = 325,973.96 × 128,782.40
  4. Step 4: Simplify right side
    236,211.60x = 41,979,708,906.30
  5. Step 5: Solve for x
    x = 41,979,708,906.30/236,211.60
  6. Step 6: Final answer
    x = 177,720.78

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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.