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Finding the Fourth Proportional to 331,507.80, 497,261.70 and 219,314.70

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Solution

The fourth proportional to 331,507.80, 497,261.70 and 219,314.70 is: 328,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,507.80 : 497,261.70 = 219,314.70 : x
  2. Step 2: Convert to fraction form
    331,507.80/497,261.70 = 219,314.70/x
  3. Step 3: Cross multiply
    331,507.80x = 497,261.70 × 219,314.70
  4. Step 4: Simplify right side
    331,507.80x = 109,056,800,556.99
  5. Step 5: Solve for x
    x = 109,056,800,556.99/331,507.80
  6. Step 6: Final answer
    x = 328,972.05

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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.