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Finding the Fourth Proportional to 236,039.76, 325,730.76 and 128,610.68

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Solution

The fourth proportional to 236,039.76, 325,730.76 and 128,610.68 is: 177,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,039.76 : 325,730.76 = 128,610.68 : x
  2. Step 2: Convert to fraction form
    236,039.76/325,730.76 = 128,610.68/x
  3. Step 3: Cross multiply
    236,039.76x = 325,730.76 × 128,610.68
  4. Step 4: Simplify right side
    236,039.76x = 41,892,452,911.86
  5. Step 5: Solve for x
    x = 41,892,452,911.86/236,039.76
  6. Step 6: Final answer
    x = 177,480.49

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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.