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Finding the Fourth Proportional to 339,304.19, 508,955.96 and 86,584.68

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Solution

The fourth proportional to 339,304.19, 508,955.96 and 86,584.68 is: 129,876.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,304.19 : 508,955.96 = 86,584.68 : x
  2. Step 2: Convert to fraction form
    339,304.19/508,955.96 = 86,584.68/x
  3. Step 3: Cross multiply
    339,304.19x = 508,955.96 × 86,584.68
  4. Step 4: Simplify right side
    339,304.19x = 44,067,787,807.38
  5. Step 5: Solve for x
    x = 44,067,787,807.38/339,304.19
  6. Step 6: Final answer
    x = 129,876.93

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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.