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Finding the Fourth Proportional to 222,117.84, 306,530 and 121,515.84

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Solution

The fourth proportional to 222,117.84, 306,530 and 121,515.84 is: 167,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,117.84 : 306,530 = 121,515.84 : x
  2. Step 2: Convert to fraction form
    222,117.84/306,530 = 121,515.84/x
  3. Step 3: Cross multiply
    222,117.84x = 306,530 × 121,515.84
  4. Step 4: Simplify right side
    222,117.84x = 37,248,250,435.20
  5. Step 5: Solve for x
    x = 37,248,250,435.20/222,117.84
  6. Step 6: Final answer
    x = 167,695.90

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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.