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Finding the Fourth Proportional to 608,680.80, 913,123.20 and 209,305.44

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Solution

The fourth proportional to 608,680.80, 913,123.20 and 209,305.44 is: 313,993.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,680.80 : 913,123.20 = 209,305.44 : x
  2. Step 2: Convert to fraction form
    608,680.80/913,123.20 = 209,305.44/x
  3. Step 3: Cross multiply
    608,680.80x = 913,123.20 × 209,305.44
  4. Step 4: Simplify right side
    608,680.80x = 191,121,653,150.21
  5. Step 5: Solve for x
    x = 191,121,653,150.21/608,680.80
  6. Step 6: Final answer
    x = 313,993.23

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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.