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Finding the Fourth Proportional to 236,080.63, 325,790.76 and 128,650.40

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Solution

The fourth proportional to 236,080.63, 325,790.76 and 128,650.40 is: 177,537.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,080.63 : 325,790.76 = 128,650.40 : x
  2. Step 2: Convert to fraction form
    236,080.63/325,790.76 = 128,650.40/x
  3. Step 3: Cross multiply
    236,080.63x = 325,790.76 × 128,650.40
  4. Step 4: Simplify right side
    236,080.63x = 41,913,111,590.30
  5. Step 5: Solve for x
    x = 41,913,111,590.30/236,080.63
  6. Step 6: Final answer
    x = 177,537.28

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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.