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Finding the Fourth Proportional to 325,574.64, 487,487 and 206,601.84

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Solution

The fourth proportional to 325,574.64, 487,487 and 206,601.84 is: 309,347.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,574.64 : 487,487 = 206,601.84 : x
  2. Step 2: Convert to fraction form
    325,574.64/487,487 = 206,601.84/x
  3. Step 3: Cross multiply
    325,574.64x = 487,487 × 206,601.84
  4. Step 4: Simplify right side
    325,574.64x = 100,715,711,176.08
  5. Step 5: Solve for x
    x = 100,715,711,176.08/325,574.64
  6. Step 6: Final answer
    x = 309,347.53

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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.