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Finding the Fourth Proportional to 443,513.80, 664,906.20 and 190,988.20

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Solution

The fourth proportional to 443,513.80, 664,906.20 and 190,988.20 is: 286,325.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,513.80 : 664,906.20 = 190,988.20 : x
  2. Step 2: Convert to fraction form
    443,513.80/664,906.20 = 190,988.20/x
  3. Step 3: Cross multiply
    443,513.80x = 664,906.20 × 190,988.20
  4. Step 4: Simplify right side
    443,513.80x = 126,989,238,306.84
  5. Step 5: Solve for x
    x = 126,989,238,306.84/443,513.80
  6. Step 6: Final answer
    x = 286,325.34

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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.