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Finding the Fourth Proportional to 220,710.40, 304,580.78 and 125,198.64

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Solution

The fourth proportional to 220,710.40, 304,580.78 and 125,198.64 is: 172,774.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,710.40 : 304,580.78 = 125,198.64 : x
  2. Step 2: Convert to fraction form
    220,710.40/304,580.78 = 125,198.64/x
  3. Step 3: Cross multiply
    220,710.40x = 304,580.78 × 125,198.64
  4. Step 4: Simplify right side
    220,710.40x = 38,133,099,426.14
  5. Step 5: Solve for x
    x = 38,133,099,426.14/220,710.40
  6. Step 6: Final answer
    x = 172,774.37

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.