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Finding the Fourth Proportional to 325,271.20, 487,979.70 and 125,573.80

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Solution

The fourth proportional to 325,271.20, 487,979.70 and 125,573.80 is: 188,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,271.20 : 487,979.70 = 125,573.80 : x
  2. Step 2: Convert to fraction form
    325,271.20/487,979.70 = 125,573.80/x
  3. Step 3: Cross multiply
    325,271.20x = 487,979.70 × 125,573.80
  4. Step 4: Simplify right side
    325,271.20x = 61,277,465,251.86
  5. Step 5: Solve for x
    x = 61,277,465,251.86/325,271.20
  6. Step 6: Final answer
    x = 188,388.84

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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.