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Finding the Fourth Proportional to 213,644.70, 320,467.05 and 179,430.30

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Solution

The fourth proportional to 213,644.70, 320,467.05 and 179,430.30 is: 269,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,644.70 : 320,467.05 = 179,430.30 : x
  2. Step 2: Convert to fraction form
    213,644.70/320,467.05 = 179,430.30/x
  3. Step 3: Cross multiply
    213,644.70x = 320,467.05 × 179,430.30
  4. Step 4: Simplify right side
    213,644.70x = 57,501,498,921.62
  5. Step 5: Solve for x
    x = 57,501,498,921.62/213,644.70
  6. Step 6: Final answer
    x = 269,145.45

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1.5x scale

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.