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Finding the Fourth Proportional to 235,564.88, 325,076.40 and 128,132.64

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Solution

The fourth proportional to 235,564.88, 325,076.40 and 128,132.64 is: 176,821.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,564.88 : 325,076.40 = 128,132.64 : x
  2. Step 2: Convert to fraction form
    235,564.88/325,076.40 = 128,132.64/x
  3. Step 3: Cross multiply
    235,564.88x = 325,076.40 × 128,132.64
  4. Step 4: Simplify right side
    235,564.88x = 41,652,897,333.70
  5. Step 5: Solve for x
    x = 41,652,897,333.70/235,564.88
  6. Step 6: Final answer
    x = 176,821.34

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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.