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Finding the Fourth Proportional to 351,535.60, 485,108.76 and 198,580.96

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Solution

The fourth proportional to 351,535.60, 485,108.76 and 198,580.96 is: 274,035.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,535.60 : 485,108.76 = 198,580.96 : x
  2. Step 2: Convert to fraction form
    351,535.60/485,108.76 = 198,580.96/x
  3. Step 3: Cross multiply
    351,535.60x = 485,108.76 × 198,580.96
  4. Step 4: Simplify right side
    351,535.60x = 96,333,363,265.21
  5. Step 5: Solve for x
    x = 96,333,363,265.21/351,535.60
  6. Step 6: Final answer
    x = 274,035.87

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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.