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Finding the Fourth Proportional to 221,570.80, 331,967.40 and 181,913.20

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Solution

The fourth proportional to 221,570.80, 331,967.40 and 181,913.20 is: 272,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,570.80 : 331,967.40 = 181,913.20 : x
  2. Step 2: Convert to fraction form
    221,570.80/331,967.40 = 181,913.20/x
  3. Step 3: Cross multiply
    221,570.80x = 331,967.40 × 181,913.20
  4. Step 4: Simplify right side
    221,570.80x = 60,389,252,029.68
  5. Step 5: Solve for x
    x = 60,389,252,029.68/221,570.80
  6. Step 6: Final answer
    x = 272,550.59

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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.