Home / 309,837.12-464,699.76-82,134.24

Finding the Fourth Proportional to 309,837.12, 464,699.76 and 82,134.24

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Solution

The fourth proportional to 309,837.12, 464,699.76 and 82,134.24 is: 123,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,837.12 : 464,699.76 = 82,134.24 : x
  2. Step 2: Convert to fraction form
    309,837.12/464,699.76 = 82,134.24/x
  3. Step 3: Cross multiply
    309,837.12x = 464,699.76 × 82,134.24
  4. Step 4: Simplify right side
    309,837.12x = 38,167,761,615.78
  5. Step 5: Solve for x
    x = 38,167,761,615.78/309,837.12
  6. Step 6: Final answer
    x = 123,186.54

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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.