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Finding the Fourth Proportional to 351,535.30, 485,161.35 and 198,579.94

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Solution

The fourth proportional to 351,535.30, 485,161.35 and 198,579.94 is: 274,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,535.30 : 485,161.35 = 198,579.94 : x
  2. Step 2: Convert to fraction form
    351,535.30/485,161.35 = 198,579.94/x
  3. Step 3: Cross multiply
    351,535.30x = 485,161.35 × 198,579.94
  4. Step 4: Simplify right side
    351,535.30x = 96,343,311,862.51
  5. Step 5: Solve for x
    x = 96,343,311,862.51/351,535.30
  6. Step 6: Final answer
    x = 274,064.40

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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.