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Finding the Fourth Proportional to 235,840.52, 325,456.65 and 128,410.55

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Solution

The fourth proportional to 235,840.52, 325,456.65 and 128,410.55 is: 177,204.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,840.52 : 325,456.65 = 128,410.55 : x
  2. Step 2: Convert to fraction form
    235,840.52/325,456.65 = 128,410.55/x
  3. Step 3: Cross multiply
    235,840.52x = 325,456.65 × 128,410.55
  4. Step 4: Simplify right side
    235,840.52x = 41,792,065,800.37
  5. Step 5: Solve for x
    x = 41,792,065,800.37/235,840.52
  6. Step 6: Final answer
    x = 177,204.78

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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.