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Finding the Fourth Proportional to 228,175.20, 342,262.80 and 218,989.80

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Solution

The fourth proportional to 228,175.20, 342,262.80 and 218,989.80 is: 328,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,175.20 : 342,262.80 = 218,989.80 : x
  2. Step 2: Convert to fraction form
    228,175.20/342,262.80 = 218,989.80/x
  3. Step 3: Cross multiply
    228,175.20x = 342,262.80 × 218,989.80
  4. Step 4: Simplify right side
    228,175.20x = 74,952,062,119.44
  5. Step 5: Solve for x
    x = 74,952,062,119.44/228,175.20
  6. Step 6: Final answer
    x = 328,484.70

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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.