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Finding the Fourth Proportional to 143,394.00, 215,044.94 and 47,309.60

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Solution

The fourth proportional to 143,394.00, 215,044.94 and 47,309.60 is: 70,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,394.00 : 215,044.94 = 47,309.60 : x
  2. Step 2: Convert to fraction form
    143,394.00/215,044.94 = 47,309.60/x
  3. Step 3: Cross multiply
    143,394.00x = 215,044.94 × 47,309.60
  4. Step 4: Simplify right side
    143,394.00x = 10,173,690,749.31
  5. Step 5: Solve for x
    x = 10,173,690,749.31/143,394.00
  6. Step 6: Final answer
    x = 70,949.21

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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.