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Finding the Fourth Proportional to 358,666.90, 494,778.72 and 222,781.30

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Solution

The fourth proportional to 358,666.90, 494,778.72 and 222,781.30 is: 307,325.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,666.90 : 494,778.72 = 222,781.30 : x
  2. Step 2: Convert to fraction form
    358,666.90/494,778.72 = 222,781.30/x
  3. Step 3: Cross multiply
    358,666.90x = 494,778.72 × 222,781.30
  4. Step 4: Simplify right side
    358,666.90x = 110,227,446,453.94
  5. Step 5: Solve for x
    x = 110,227,446,453.94/358,666.90
  6. Step 6: Final answer
    x = 307,325.39

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1.5x scale

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.