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Finding the Fourth Proportional to 351,960.90, 485,699.71 and 198,996.45

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Solution

The fourth proportional to 351,960.90, 485,699.71 and 198,996.45 is: 274,611.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,960.90 : 485,699.71 = 198,996.45 : x
  2. Step 2: Convert to fraction form
    351,960.90/485,699.71 = 198,996.45/x
  3. Step 3: Cross multiply
    351,960.90x = 485,699.71 × 198,996.45
  4. Step 4: Simplify right side
    351,960.90x = 96,652,518,056.03
  5. Step 5: Solve for x
    x = 96,652,518,056.03/351,960.90
  6. Step 6: Final answer
    x = 274,611.52

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1.5x scale

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.