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Finding the Fourth Proportional to 443,304, 664,783.74 and 143,712.36

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Solution

The fourth proportional to 443,304, 664,783.74 and 143,712.36 is: 215,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,304 : 664,783.74 = 143,712.36 : x
  2. Step 2: Convert to fraction form
    443,304/664,783.74 = 143,712.36/x
  3. Step 3: Cross multiply
    443,304x = 664,783.74 × 143,712.36
  4. Step 4: Simplify right side
    443,304x = 95,537,640,165.03
  5. Step 5: Solve for x
    x = 95,537,640,165.03/443,304
  6. Step 6: Final answer
    x = 215,512.70

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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.