Home / 331,729.48-497,299.58-129,278.69

Finding the Fourth Proportional to 331,729.48, 497,299.58 and 129,278.69

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Solution

The fourth proportional to 331,729.48, 497,299.58 and 129,278.69 is: 193,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,729.48 : 497,299.58 = 129,278.69 : x
  2. Step 2: Convert to fraction form
    331,729.48/497,299.58 = 129,278.69/x
  3. Step 3: Cross multiply
    331,729.48x = 497,299.58 × 129,278.69
  4. Step 4: Simplify right side
    331,729.48x = 64,290,238,239.95
  5. Step 5: Solve for x
    x = 64,290,238,239.95/331,729.48
  6. Step 6: Final answer
    x = 193,803.21

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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.