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Finding the Fourth Proportional to 398,562.42, 550,012.53 and 219,714.42

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Solution

The fourth proportional to 398,562.42, 550,012.53 and 219,714.42 is: 303,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,562.42 : 550,012.53 = 219,714.42 : x
  2. Step 2: Convert to fraction form
    398,562.42/550,012.53 = 219,714.42/x
  3. Step 3: Cross multiply
    398,562.42x = 550,012.53 × 219,714.42
  4. Step 4: Simplify right side
    398,562.42x = 120,845,684,021.68
  5. Step 5: Solve for x
    x = 120,845,684,021.68/398,562.42
  6. Step 6: Final answer
    x = 303,203.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.