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Finding the Fourth Proportional to 325,133.78, 487,069.66 and 239,589.40

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Solution

The fourth proportional to 325,133.78, 487,069.66 and 239,589.40 is: 358,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,133.78 : 487,069.66 = 239,589.40 : x
  2. Step 2: Convert to fraction form
    325,133.78/487,069.66 = 239,589.40/x
  3. Step 3: Cross multiply
    325,133.78x = 487,069.66 × 239,589.40
  4. Step 4: Simplify right side
    325,133.78x = 116,696,727,597.60
  5. Step 5: Solve for x
    x = 116,696,727,597.60/325,133.78
  6. Step 6: Final answer
    x = 358,919.11

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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.