Home / 222,505.10-307,057.38-120,530.78

Finding the Fourth Proportional to 222,505.10, 307,057.38 and 120,530.78

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Solution

The fourth proportional to 222,505.10, 307,057.38 and 120,530.78 is: 166,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,505.10 : 307,057.38 = 120,530.78 : x
  2. Step 2: Convert to fraction form
    222,505.10/307,057.38 = 120,530.78/x
  3. Step 3: Cross multiply
    222,505.10x = 307,057.38 × 120,530.78
  4. Step 4: Simplify right side
    222,505.10x = 37,009,865,516.16
  5. Step 5: Solve for x
    x = 37,009,865,516.16/222,505.10
  6. Step 6: Final answer
    x = 166,332.66

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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.