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Finding the Fourth Proportional to 663,364.40, 994,803.60 and 214,203.20

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Solution

The fourth proportional to 663,364.40, 994,803.60 and 214,203.20 is: 321,226.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,364.40 : 994,803.60 = 214,203.20 : x
  2. Step 2: Convert to fraction form
    663,364.40/994,803.60 = 214,203.20/x
  3. Step 3: Cross multiply
    663,364.40x = 994,803.60 × 214,203.20
  4. Step 4: Simplify right side
    663,364.40x = 213,090,114,491.52
  5. Step 5: Solve for x
    x = 213,090,114,491.52/663,364.40
  6. Step 6: Final answer
    x = 321,226.33

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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.