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Finding the Fourth Proportional to 235,627.96, 325,168.02 and 128,198.78

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Solution

The fourth proportional to 235,627.96, 325,168.02 and 128,198.78 is: 176,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,627.96 : 325,168.02 = 128,198.78 : x
  2. Step 2: Convert to fraction form
    235,627.96/325,168.02 = 128,198.78/x
  3. Step 3: Cross multiply
    235,627.96x = 325,168.02 × 128,198.78
  4. Step 4: Simplify right side
    235,627.96x = 41,686,143,459.02
  5. Step 5: Solve for x
    x = 41,686,143,459.02/235,627.96
  6. Step 6: Final answer
    x = 176,915.10

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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.