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Finding the Fourth Proportional to 202,315.70, 303,558.60 and 108,712.10

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Solution

The fourth proportional to 202,315.70, 303,558.60 and 108,712.10 is: 163,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,315.70 : 303,558.60 = 108,712.10 : x
  2. Step 2: Convert to fraction form
    202,315.70/303,558.60 = 108,712.10/x
  3. Step 3: Cross multiply
    202,315.70x = 303,558.60 × 108,712.10
  4. Step 4: Simplify right side
    202,315.70x = 33,000,492,879.06
  5. Step 5: Solve for x
    x = 33,000,492,879.06/202,315.70
  6. Step 6: Final answer
    x = 163,113.85

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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.