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Finding the Fourth Proportional to 235,811.04, 325,425.08 and 128,386.96

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Solution

The fourth proportional to 235,811.04, 325,425.08 and 128,386.96 is: 177,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,811.04 : 325,425.08 = 128,386.96 : x
  2. Step 2: Convert to fraction form
    235,811.04/325,425.08 = 128,386.96/x
  3. Step 3: Cross multiply
    235,811.04x = 325,425.08 × 128,386.96
  4. Step 4: Simplify right side
    235,811.04x = 41,780,336,087.02
  5. Step 5: Solve for x
    x = 41,780,336,087.02/235,811.04
  6. Step 6: Final answer
    x = 177,177.19

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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.