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Finding the Fourth Proportional to 235,634.52, 325,182.60 and 128,211.51

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Solution

The fourth proportional to 235,634.52, 325,182.60 and 128,211.51 is: 176,935.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,634.52 : 325,182.60 = 128,211.51 : x
  2. Step 2: Convert to fraction form
    235,634.52/325,182.60 = 128,211.51/x
  3. Step 3: Cross multiply
    235,634.52x = 325,182.60 × 128,211.51
  4. Step 4: Simplify right side
    235,634.52x = 41,692,151,562.01
  5. Step 5: Solve for x
    x = 41,692,151,562.01/235,634.52
  6. Step 6: Final answer
    x = 176,935.67

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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.