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Finding the Fourth Proportional to 222,042.45, 306,420.42 and 122,590.26

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Solution

The fourth proportional to 222,042.45, 306,420.42 and 122,590.26 is: 169,175.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,042.45 : 306,420.42 = 122,590.26 : x
  2. Step 2: Convert to fraction form
    222,042.45/306,420.42 = 122,590.26/x
  3. Step 3: Cross multiply
    222,042.45x = 306,420.42 × 122,590.26
  4. Step 4: Simplify right side
    222,042.45x = 37,564,158,957.11
  5. Step 5: Solve for x
    x = 37,564,158,957.11/222,042.45
  6. Step 6: Final answer
    x = 169,175.57

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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.