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Finding the Fourth Proportional to 235,804.62, 325,417.19 and 128,376.48

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Solution

The fourth proportional to 235,804.62, 325,417.19 and 128,376.48 is: 177,163.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,804.62 : 325,417.19 = 128,376.48 : x
  2. Step 2: Convert to fraction form
    235,804.62/325,417.19 = 128,376.48/x
  3. Step 3: Cross multiply
    235,804.62x = 325,417.19 × 128,376.48
  4. Step 4: Simplify right side
    235,804.62x = 41,775,913,383.69
  5. Step 5: Solve for x
    x = 41,775,913,383.69/235,804.62
  6. Step 6: Final answer
    x = 177,163.25

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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.