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Finding the Fourth Proportional to 213,817.78, 320,728.06 and 56,044.88

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Solution

The fourth proportional to 213,817.78, 320,728.06 and 56,044.88 is: 84,067.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,817.78 : 320,728.06 = 56,044.88 : x
  2. Step 2: Convert to fraction form
    213,817.78/320,728.06 = 56,044.88/x
  3. Step 3: Cross multiply
    213,817.78x = 320,728.06 × 56,044.88
  4. Step 4: Simplify right side
    213,817.78x = 17,975,165,635.33
  5. Step 5: Solve for x
    x = 17,975,165,635.33/213,817.78
  6. Step 6: Final answer
    x = 84,067.68

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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.