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Finding the Fourth Proportional to 218,530.66, 301,553.94 and 133,631.32

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Solution

The fourth proportional to 218,530.66, 301,553.94 and 133,631.32 is: 184,399.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,530.66 : 301,553.94 = 133,631.32 : x
  2. Step 2: Convert to fraction form
    218,530.66/301,553.94 = 133,631.32/x
  3. Step 3: Cross multiply
    218,530.66x = 301,553.94 × 133,631.32
  4. Step 4: Simplify right side
    218,530.66x = 40,297,051,053.40
  5. Step 5: Solve for x
    x = 40,297,051,053.40/218,530.66
  6. Step 6: Final answer
    x = 184,399.99

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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.