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Finding the Fourth Proportional to 243,012.70, 364,519.05 and 217,424.80

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Solution

The fourth proportional to 243,012.70, 364,519.05 and 217,424.80 is: 326,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,012.70 : 364,519.05 = 217,424.80 : x
  2. Step 2: Convert to fraction form
    243,012.70/364,519.05 = 217,424.80/x
  3. Step 3: Cross multiply
    243,012.70x = 364,519.05 × 217,424.80
  4. Step 4: Simplify right side
    243,012.70x = 79,255,481,542.44
  5. Step 5: Solve for x
    x = 79,255,481,542.44/243,012.70
  6. Step 6: Final answer
    x = 326,137.20

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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.