Home / 231,786.60-347,679.90-136,919.40

Finding the Fourth Proportional to 231,786.60, 347,679.90 and 136,919.40

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Solution

The fourth proportional to 231,786.60, 347,679.90 and 136,919.40 is: 205,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.60 : 347,679.90 = 136,919.40 : x
  2. Step 2: Convert to fraction form
    231,786.60/347,679.90 = 136,919.40/x
  3. Step 3: Cross multiply
    231,786.60x = 347,679.90 × 136,919.40
  4. Step 4: Simplify right side
    231,786.60x = 47,604,123,300.06
  5. Step 5: Solve for x
    x = 47,604,123,300.06/231,786.60
  6. Step 6: Final answer
    x = 205,379.10

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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.