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Finding the Fourth Proportional to 490,614.40, 735,338.40 and 206,304.40

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Solution

The fourth proportional to 490,614.40, 735,338.40 and 206,304.40 is: 309,211.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,614.40 : 735,338.40 = 206,304.40 : x
  2. Step 2: Convert to fraction form
    490,614.40/735,338.40 = 206,304.40/x
  3. Step 3: Cross multiply
    490,614.40x = 735,338.40 × 206,304.40
  4. Step 4: Simplify right side
    490,614.40x = 151,703,547,408.96
  5. Step 5: Solve for x
    x = 151,703,547,408.96/490,614.40
  6. Step 6: Final answer
    x = 309,211.36

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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.