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Finding the Fourth Proportional to 331,641.63, 457,739.31 and 210,759.34

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Solution

The fourth proportional to 331,641.63, 457,739.31 and 210,759.34 is: 290,894.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,641.63 : 457,739.31 = 210,759.34 : x
  2. Step 2: Convert to fraction form
    331,641.63/457,739.31 = 210,759.34/x
  3. Step 3: Cross multiply
    331,641.63x = 457,739.31 × 210,759.34
  4. Step 4: Simplify right side
    331,641.63x = 96,472,834,867.66
  5. Step 5: Solve for x
    x = 96,472,834,867.66/331,641.63
  6. Step 6: Final answer
    x = 290,894.83

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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.