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Finding the Fourth Proportional to 331,208.20, 497,141.90 and 153,755.40

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Solution

The fourth proportional to 331,208.20, 497,141.90 and 153,755.40 is: 230,786.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,208.20 : 497,141.90 = 153,755.40 : x
  2. Step 2: Convert to fraction form
    331,208.20/497,141.90 = 153,755.40/x
  3. Step 3: Cross multiply
    331,208.20x = 497,141.90 × 153,755.40
  4. Step 4: Simplify right side
    331,208.20x = 76,438,251,691.26
  5. Step 5: Solve for x
    x = 76,438,251,691.26/331,208.20
  6. Step 6: Final answer
    x = 230,786.11

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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.