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Finding the Fourth Proportional to 243,003.20, 364,504.80 and 218,508.80

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Solution

The fourth proportional to 243,003.20, 364,504.80 and 218,508.80 is: 327,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,003.20 : 364,504.80 = 218,508.80 : x
  2. Step 2: Convert to fraction form
    243,003.20/364,504.80 = 218,508.80/x
  3. Step 3: Cross multiply
    243,003.20x = 364,504.80 × 218,508.80
  4. Step 4: Simplify right side
    243,003.20x = 79,647,506,442.24
  5. Step 5: Solve for x
    x = 79,647,506,442.24/243,003.20
  6. Step 6: Final answer
    x = 327,763.20

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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.