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Finding the Fourth Proportional to 222,990, 307,765.08 and 127,500.72

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Solution

The fourth proportional to 222,990, 307,765.08 and 127,500.72 is: 175,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,990 : 307,765.08 = 127,500.72 : x
  2. Step 2: Convert to fraction form
    222,990/307,765.08 = 127,500.72/x
  3. Step 3: Cross multiply
    222,990x = 307,765.08 × 127,500.72
  4. Step 4: Simplify right side
    222,990x = 39,240,269,290.86
  5. Step 5: Solve for x
    x = 39,240,269,290.86/222,990
  6. Step 6: Final answer
    x = 175,973.22

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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.