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Finding the Fourth Proportional to 339,304.74, 508,983.81 and 89,986.74

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Solution

The fourth proportional to 339,304.74, 508,983.81 and 89,986.74 is: 134,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,304.74 : 508,983.81 = 89,986.74 : x
  2. Step 2: Convert to fraction form
    339,304.74/508,983.81 = 89,986.74/x
  3. Step 3: Cross multiply
    339,304.74x = 508,983.81 × 89,986.74
  4. Step 4: Simplify right side
    339,304.74x = 45,801,793,774.68
  5. Step 5: Solve for x
    x = 45,801,793,774.68/339,304.74
  6. Step 6: Final answer
    x = 134,987.19

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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.