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Finding the Fourth Proportional to 222,568.96, 307,145.28 and 121,966.96

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Solution

The fourth proportional to 222,568.96, 307,145.28 and 121,966.96 is: 168,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,568.96 : 307,145.28 = 121,966.96 : x
  2. Step 2: Convert to fraction form
    222,568.96/307,145.28 = 121,966.96/x
  3. Step 3: Cross multiply
    222,568.96x = 307,145.28 × 121,966.96
  4. Step 4: Simplify right side
    222,568.96x = 37,461,576,079.95
  5. Step 5: Solve for x
    x = 37,461,576,079.95/222,568.96
  6. Step 6: Final answer
    x = 168,314.47

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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.