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Finding the Fourth Proportional to 235,654.38, 325,201.59 and 128,224.80

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Solution

The fourth proportional to 235,654.38, 325,201.59 and 128,224.80 is: 176,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,654.38 : 325,201.59 = 128,224.80 : x
  2. Step 2: Convert to fraction form
    235,654.38/325,201.59 = 128,224.80/x
  3. Step 3: Cross multiply
    235,654.38x = 325,201.59 × 128,224.80
  4. Step 4: Simplify right side
    235,654.38x = 41,698,908,837.43
  5. Step 5: Solve for x
    x = 41,698,908,837.43/235,654.38
  6. Step 6: Final answer
    x = 176,949.43

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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.