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Finding the Fourth Proportional to 235,732.32, 325,310.40 and 128,302.20

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Solution

The fourth proportional to 235,732.32, 325,310.40 and 128,302.20 is: 177,056.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,732.32 : 325,310.40 = 128,302.20 : x
  2. Step 2: Convert to fraction form
    235,732.32/325,310.40 = 128,302.20/x
  3. Step 3: Cross multiply
    235,732.32x = 325,310.40 × 128,302.20
  4. Step 4: Simplify right side
    235,732.32x = 41,738,040,002.88
  5. Step 5: Solve for x
    x = 41,738,040,002.88/235,732.32
  6. Step 6: Final answer
    x = 177,056.93

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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.