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Finding the Fourth Proportional to 238,987.20, 358,891.20 and 132,326.40

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Solution

The fourth proportional to 238,987.20, 358,891.20 and 132,326.40 is: 198,716.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,987.20 : 358,891.20 = 132,326.40 : x
  2. Step 2: Convert to fraction form
    238,987.20/358,891.20 = 132,326.40/x
  3. Step 3: Cross multiply
    238,987.20x = 358,891.20 × 132,326.40
  4. Step 4: Simplify right side
    238,987.20x = 47,490,780,487.68
  5. Step 5: Solve for x
    x = 47,490,780,487.68/238,987.20
  6. Step 6: Final answer
    x = 198,716.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.