Home / 231,408.20-346,421.10-137,865.80

Finding the Fourth Proportional to 231,408.20, 346,421.10 and 137,865.80

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Solution

The fourth proportional to 231,408.20, 346,421.10 and 137,865.80 is: 206,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,408.20 : 346,421.10 = 137,865.80 : x
  2. Step 2: Convert to fraction form
    231,408.20/346,421.10 = 137,865.80/x
  3. Step 3: Cross multiply
    231,408.20x = 346,421.10 × 137,865.80
  4. Step 4: Simplify right side
    231,408.20x = 47,759,622,088.38
  5. Step 5: Solve for x
    x = 47,759,622,088.38/231,408.20
  6. Step 6: Final answer
    x = 206,386.90

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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.