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Finding the Fourth Proportional to 351,870.90, 485,646.88 and 200,967.90

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Solution

The fourth proportional to 351,870.90, 485,646.88 and 200,967.90 is: 277,372.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,870.90 : 485,646.88 = 200,967.90 : x
  2. Step 2: Convert to fraction form
    351,870.90/485,646.88 = 200,967.90/x
  3. Step 3: Cross multiply
    351,870.90x = 485,646.88 × 200,967.90
  4. Step 4: Simplify right side
    351,870.90x = 97,599,433,615.15
  5. Step 5: Solve for x
    x = 97,599,433,615.15/351,870.90
  6. Step 6: Final answer
    x = 277,372.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.