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Finding the Fourth Proportional to 331,203.70, 497,135.15 and 153,750.90

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Solution

The fourth proportional to 331,203.70, 497,135.15 and 153,750.90 is: 230,779.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,203.70 : 497,135.15 = 153,750.90 : x
  2. Step 2: Convert to fraction form
    331,203.70/497,135.15 = 153,750.90/x
  3. Step 3: Cross multiply
    331,203.70x = 497,135.15 × 153,750.90
  4. Step 4: Simplify right side
    331,203.70x = 76,434,976,734.14
  5. Step 5: Solve for x
    x = 76,434,976,734.14/331,203.70
  6. Step 6: Final answer
    x = 230,779.36

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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.