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Finding the Fourth Proportional to 207,640.70, 311,461.05 and 203,704.10

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Solution

The fourth proportional to 207,640.70, 311,461.05 and 203,704.10 is: 305,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,640.70 : 311,461.05 = 203,704.10 : x
  2. Step 2: Convert to fraction form
    207,640.70/311,461.05 = 203,704.10/x
  3. Step 3: Cross multiply
    207,640.70x = 311,461.05 × 203,704.10
  4. Step 4: Simplify right side
    207,640.70x = 63,445,892,875.31
  5. Step 5: Solve for x
    x = 63,445,892,875.31/207,640.70
  6. Step 6: Final answer
    x = 305,556.15

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1.5x scale

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.