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Finding the Fourth Proportional to 240,864, 361,382.88 and 128,425.92

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Solution

The fourth proportional to 240,864, 361,382.88 and 128,425.92 is: 192,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,864 : 361,382.88 = 128,425.92 : x
  2. Step 2: Convert to fraction form
    240,864/361,382.88 = 128,425.92/x
  3. Step 3: Cross multiply
    240,864x = 361,382.88 × 128,425.92
  4. Step 4: Simplify right side
    240,864x = 46,410,928,836.25
  5. Step 5: Solve for x
    x = 46,410,928,836.25/240,864
  6. Step 6: Final answer
    x = 192,685.20

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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.