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Finding the Fourth Proportional to 144,886.40, 217,394.40 and 69,977.60

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Solution

The fourth proportional to 144,886.40, 217,394.40 and 69,977.60 is: 104,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,886.40 : 217,394.40 = 69,977.60 : x
  2. Step 2: Convert to fraction form
    144,886.40/217,394.40 = 69,977.60/x
  3. Step 3: Cross multiply
    144,886.40x = 217,394.40 × 69,977.60
  4. Step 4: Simplify right side
    144,886.40x = 15,212,738,365.44
  5. Step 5: Solve for x
    x = 15,212,738,365.44/144,886.40
  6. Step 6: Final answer
    x = 104,997.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.