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Finding the Fourth Proportional to 640,185.96, 960,121.92 and 303,214.44

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Solution

The fourth proportional to 640,185.96, 960,121.92 and 303,214.44 is: 454,747.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,185.96 : 960,121.92 = 303,214.44 : x
  2. Step 2: Convert to fraction form
    640,185.96/960,121.92 = 303,214.44/x
  3. Step 3: Cross multiply
    640,185.96x = 960,121.92 × 303,214.44
  4. Step 4: Simplify right side
    640,185.96x = 291,122,830,304.53
  5. Step 5: Solve for x
    x = 291,122,830,304.53/640,185.96
  6. Step 6: Final answer
    x = 454,747.29

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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.