Home / 345,286.29-518,406.48-238,419.45

Finding the Fourth Proportional to 345,286.29, 518,406.48 and 238,419.45

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Solution

The fourth proportional to 345,286.29, 518,406.48 and 238,419.45 is: 357,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,286.29 : 518,406.48 = 238,419.45 : x
  2. Step 2: Convert to fraction form
    345,286.29/518,406.48 = 238,419.45/x
  3. Step 3: Cross multiply
    345,286.29x = 518,406.48 × 238,419.45
  4. Step 4: Simplify right side
    345,286.29x = 123,598,187,838.04
  5. Step 5: Solve for x
    x = 123,598,187,838.04/345,286.29
  6. Step 6: Final answer
    x = 357,958.57

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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.