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Finding the Fourth Proportional to 640,109.64, 960,251.94 and 235,247.88

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Solution

The fourth proportional to 640,109.64, 960,251.94 and 235,247.88 is: 352,903.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,109.64 : 960,251.94 = 235,247.88 : x
  2. Step 2: Convert to fraction form
    640,109.64/960,251.94 = 235,247.88/x
  3. Step 3: Cross multiply
    640,109.64x = 960,251.94 × 235,247.88
  4. Step 4: Simplify right side
    640,109.64x = 225,897,233,150.89
  5. Step 5: Solve for x
    x = 225,897,233,150.89/640,109.64
  6. Step 6: Final answer
    x = 352,903.97

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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.