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Finding the Fourth Proportional to 280,988.52, 388,200.78 and 235,596.12

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Solution

The fourth proportional to 280,988.52, 388,200.78 and 235,596.12 is: 325,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,988.52 : 388,200.78 = 235,596.12 : x
  2. Step 2: Convert to fraction form
    280,988.52/388,200.78 = 235,596.12/x
  3. Step 3: Cross multiply
    280,988.52x = 388,200.78 × 235,596.12
  4. Step 4: Simplify right side
    280,988.52x = 91,458,597,548.97
  5. Step 5: Solve for x
    x = 91,458,597,548.97/280,988.52
  6. Step 6: Final answer
    x = 325,488.73

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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.