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Finding the Fourth Proportional to 213,472.30, 320,202.93 and 69,377.31

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Solution

The fourth proportional to 213,472.30, 320,202.93 and 69,377.31 is: 104,064.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,472.30 : 320,202.93 = 69,377.31 : x
  2. Step 2: Convert to fraction form
    213,472.30/320,202.93 = 69,377.31/x
  3. Step 3: Cross multiply
    213,472.30x = 320,202.93 × 69,377.31
  4. Step 4: Simplify right side
    213,472.30x = 22,214,819,160.11
  5. Step 5: Solve for x
    x = 22,214,819,160.11/213,472.30
  6. Step 6: Final answer
    x = 104,064.18

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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.