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Finding the Fourth Proportional to 220,897.20, 331,345.80 and 196,402.80

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Solution

The fourth proportional to 220,897.20, 331,345.80 and 196,402.80 is: 294,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,897.20 : 331,345.80 = 196,402.80 : x
  2. Step 2: Convert to fraction form
    220,897.20/331,345.80 = 196,402.80/x
  3. Step 3: Cross multiply
    220,897.20x = 331,345.80 × 196,402.80
  4. Step 4: Simplify right side
    220,897.20x = 65,077,242,888.24
  5. Step 5: Solve for x
    x = 65,077,242,888.24/220,897.20
  6. Step 6: Final answer
    x = 294,604.20

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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.