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Finding the Fourth Proportional to 235,741.82, 325,323.65 and 128,312.58

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Solution

The fourth proportional to 235,741.82, 325,323.65 and 128,312.58 is: 177,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,741.82 : 325,323.65 = 128,312.58 : x
  2. Step 2: Convert to fraction form
    235,741.82/325,323.65 = 128,312.58/x
  3. Step 3: Cross multiply
    235,741.82x = 325,323.65 × 128,312.58
  4. Step 4: Simplify right side
    235,741.82x = 41,743,117,672.73
  5. Step 5: Solve for x
    x = 41,743,117,672.73/235,741.82
  6. Step 6: Final answer
    x = 177,071.33

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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.