Home / 418,143.30-576,991.49-231,870.09

Finding the Fourth Proportional to 418,143.30, 576,991.49 and 231,870.09

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Solution

The fourth proportional to 418,143.30, 576,991.49 and 231,870.09 is: 319,955.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,143.30 : 576,991.49 = 231,870.09 : x
  2. Step 2: Convert to fraction form
    418,143.30/576,991.49 = 231,870.09/x
  3. Step 3: Cross multiply
    418,143.30x = 576,991.49 × 231,870.09
  4. Step 4: Simplify right side
    418,143.30x = 133,787,069,719.90
  5. Step 5: Solve for x
    x = 133,787,069,719.90/418,143.30
  6. Step 6: Final answer
    x = 319,955.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.